Item A.1. Reporting period covered.

a. Report for period ending:	2022-02-28
b. Does this report cover a period of less than 12 months?	Yes No

Item B.1. Background information.

a. Full name of Registrant	iShares Trust
b. Investment Company Act file number ( e.g., 811-)	811-09729
c. CIK	0001100663
d. LEI	5493000860OXIC4B5K91

Item B.2. Address and telephone number of Registrant.

a. Street 1	400 Howard Street
Street 2
b. City	San Francisco
c. State, if applicable	CALIFORNIA
d. Foreign country, if applicable	UNITED STATES OF AMERICA
e. Zip code and zip code extension, or foreign postal code	94105
f. Telephone number (including country code if foreign)	800-474-2737
g. Public Website, if any	www.blackrock.com

Item B.3. Location of books and records.

Instruction. Provide the requested information for each person maintaining physical possession of each account, book, or other document required to be maintained by section 31(a) of the Act (15 U.S.C. 80a-30(a)) and the rules under that section.

Location books Record: 1
a. Name of person (e.g., a custodian of records)	State Street Bank and Trust Company
b. Street 1	1 Lincoln Street
Street 2
c. City	Boston
d. State, if applicable	MASSACHUSETTS
e. Foreign country, if applicable	UNITED STATES OF AMERICA
f. Zip code and zip code extension, or foreign postal code	02111
g. Telephone number (including country code if foreign)	617-786-3000
h. Briefly describe the books and records kept at this location:	Records related to its functions as administrator, accounting agent, transfer agent and custodian
Location books Record: 2
a. Name of person (e.g., a custodian of records)	BlackRock Investments, LLC
b. Street 1	40 East 52nd St
Street 2
c. City	New York
d. State, if applicable	NEW YORK
e. Foreign country, if applicable	UNITED STATES OF AMERICA
f. Zip code and zip code extension, or foreign postal code	10022
g. Telephone number (including country code if foreign)	609-282-3046
h. Briefly describe the books and records kept at this location:	Records related to its functions as distributor
Location books Record: 3
a. Name of person (e.g., a custodian of records)	BlackRock Fund Advisors
b. Street 1	400 Howard Street
Street 2
c. City	San Francisco
d. State, if applicable	CALIFORNIA
e. Foreign country, if applicable	UNITED STATES OF AMERICA
f. Zip code and zip code extension, or foreign postal code	94105
g. Telephone number (including country code if foreign)	415-670-2000
h. Briefly describe the books and records kept at this location:	Records related to its functions as advisor

Item B.4. Initial of final filings.

Instruction. Respond "yes" to Item B.4.b only if the Registrant has filed an application to deregister or will file an application to deregister before its next required filing on this form.

a. Is this the first filing on this form by the Registrant?	Yes No
b. Is this the last filing on this form by the Registrant?	Yes No

Item B.5. Family of investment companies.

Instruction. "Family of investment companies" means, except for insurance company separate accounts, any two or more registered investment companies that (i) share the same investment adviser or principal underwriter; and (ii) hold themselves out to investors as related companies for purposes of investment and investor services.In responding to this item, all Registrants in the family of investment companies should report the name of the family of investment companies identically.

Insurance company separate accounts that may not hold themselves out to investors as related companies (products) for purposes of investment and investor services should consider themselves part of the same family if the operational or accounting or control systems under which these entities function are substantially similar.

a. Is the Registrant part of a family of investment companies?

Yes No

i. Full name of family of investment companies

BlackRock-advised Funds

Item B.6. Organization.

Instruction. For Item B.6.a.i., the Registrant should include all Series that have been established by the Registrant and have shares outstanding (other than shares issued in connection with an initial investment to satisfy section 14(a) of the Act).

Indicate the classification of the Registrant by checking the applicable item below.

 a. Open-end management investment company registered under the Act on Form N-1A 
 b. Closed-end management investment company registered under the Act on Form N-2  
 c. Separate account offering variable annuity contracts which is registered under the Act as a management investment company on Form N-3 
 d. Separate account offering variable annuity contracts which is registered under the Act as a unit investment trust on Form N-4 
 e. Small business investment company registered under the Act on Form N-5 
 f. Separate account offering variable insurance contracts which is registered under the Act as a unit investment trust on Form N-6 
 g. Unit investment trust registered under the Act on Form N-8B-2 

i. Total number of Series of the Registrant

302

Item B.7. Securities Act registration.

Is the Registrant the issuer of a class of securities registered under the Securities Act of 1933 ("Securities Act")?

Yes No

Item B.8. Directors.

Provide the information requested below about each person serving as director of the Registrant (management investment companies only):

Director Record: 1
a. Full Name	John E. Kerrigan
b. CRD number, if any	N/A
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-22649
File Number Record: 2
File Number Record:	811-09102
Director Record: 2
a. Full Name	Richard L. Fagnani
b. CRD number, if any	N/A
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-09102
File Number Record: 2
File Number Record:	811-22649
Director Record: 3
a. Full Name	Robert S. Kapito
b. CRD number, if any	N/A
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-22649
File Number Record: 2
File Number Record:	811-09102
Director Record: 4
a. Full Name	Drew E. Lawton
b. CRD number, if any	001173631
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-09102
File Number Record: 2
File Number Record:	811-22649
Director Record: 5
a. Full Name	John E. Martinez
b. CRD number, if any	N/A
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-09102
File Number Record: 2
File Number Record:	811-22649
Director Record: 6
a. Full Name	Salim Ramji
b. CRD number, if any	004797124
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-09102
File Number Record: 2
File Number Record:	811-22649
Director Record: 7
a. Full Name	Madhav V. Rajan
b. CRD number, if any	N/A
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-09102
File Number Record: 2
File Number Record:	811-22649
Director Record: 8
a. Full Name	Jane D. Carlin
b. CRD number, if any	001279982
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-22649
File Number Record: 2
File Number Record:	811-09102
Director Record: 9
a. Full Name	Cecilia H. Herbert
b. CRD number, if any	N/A
c. Is the person an "interested person" of the Registrant as that term is defined in section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19))?	Yes No
d. Investment Company Act file number of any other registered investment company for which the person also serves as a director (e.g., 811-)
File Number Record: 1
File Number Record:	811-22649
File Number Record: 2
File Number Record:	811-23362
File Number Record: 3
File Number Record:	811-09102

Item B.9. Chief compliance officer.

Provide the information requested below about each person serving as chief compliance officer of the Registrant for purposes of rule 38a-1 (17 CFR 270.38a- 1):

Chief compliance officer Record: 1
a. Full Name	Charles Park
b. CRD Number, if any	N/A
c. Street Address 1	55 East 52nd Street
Street Address 2
d. City	New York
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Zip code and zip code extension, or foreign postal code	10055
h. Telephone number (including country code if foreign)	XXXXXX
i. Has the chief compliance officer changed since the last filing?	Yes No

If the chief compliance officer is compensated or employed by any person other than the Registrant, or an affiliated person of the Registrant, for providing chief compliance officer services, provide:

CCO employer Record: 1
i. Name of the person	N/A
ii. Person's IRS Employer Identification Number	N/A

Item B.10. Matters for security holder vote.

Instruction. Registrants registered on Forms N-3, N-4 or N-6, should respond "yes" to this Item only if security holder votes were solicited on contract-level matters.

Were any matters submitted by the Registrant for its security holders' vote during the reporting period?

Yes No

Item B.11. Legal proceeding.

Instruction. For purposes of this Item, the following proceedings should be described: (1) any bankruptcy, receivership or similar proceeding with respect to the Registrant or any of its significant subsidiaries; (2) any proceeding to which any director, officer or other affiliated person of the Registrant is a party adverse to the Registrant or any of its subsidiaries; and (3) any proceeding involving the revocation or suspension of the right of the Registrant to sell securities.

a. Have there been any material legal proceedings, other than routine litigation incidental to the business, to which the Registrant or any of its subsidiaries was a party or of which any of their property was the subject during the reporting period?

Yes No

b. Has any proceeding previously reported been terminated?

Yes No

Item B.12. Fidelity bond and insurance (management investment companies only).

a. Were any claims with respect to the Registrant filed under a fidelity bond (including, but not limited to, the fidelity insuring agreement of the bond) during the reporting period?	Yes No

Item B.13. Directors and officers/errors and omissions insurance (management investment companies only).

a. Are the Registrant's officers or directors covered in their capacities as officers or directors under any directors and officers/errors and omissions insurance policy owned by the Registrant or anyone else?	Yes No
i. If yes, were any claims filed under the policy during the reporting period with respect to the Registrant?	Yes No

Item B.14. Provision of financial support.

Instruction. For purposes of this Item, a provision of financial support includes any (1) capital contribution, (2) purchase of a security from a Money Market Fund in reliance on rule 17a-9 under the Act (17 CFR 270.17a-9), (3) purchase of any defaulted or devalued security at fair value reasonably intended to increase or stabilize the value or liquidity of the Registrant's portfolio, (4) execution of letter of credit or letter of indemnity, (5) capital support agreement (whether or not the Registrant ultimately received support), (6) performance guarantee, or (7) other similar action reasonably intended to increase or stabilize the value or liquidity of the Registrant's portfolio. Provision of financial support does not include any (1) routine waiver of fees or reimbursement of Registrant's expenses, (2) routine inter-fund lending, (3) routine inter-fund purchases of Registrant's shares, or (4) action that would qualify as financial support as defined above, that the board of directors has otherwise determined not to be reasonably intended to increase or stabilize the value or liquidity of the Registrant's portfolio.

Did an affiliated person, promoter, or principal underwriter of the Registrant, or an affiliated person of such a person, provide any form of financial support to the Registrant during the reporting period?

Yes No

Item B.15. Exemptive orders.

a. During the reporting period, did the Registrant rely on any orders from the Commission granting an exemption from one or more provisions of the Act, Securities Act or Exchange Act?	Yes No
Release number Record: 1
i. If yes, provide below the release number for each order	IC-29172
Release number Record: 2
i. If yes, provide below the release number for each order	IC-25878
Release number Record: 3
i. If yes, provide below the release number for each order	IC-26606

Item B.16. Principal underwriters.

a. Provide the information requested below about each principal underwriter:

Principal underwriter Record: 1
i. Full name	BlackRock Investments, LLC
ii. SEC file number (e.g., 8-)	8-48436
iii. CRD number	000038642
iv. LEI, if any	54930061FBHCKXL2G714
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Is the principal underwriter an affiliated person of the Registrant, or its investment adviser(s) or depositor?	Yes No
b. Have any principal underwriters been hired or terminated during the reporting period?	Yes No

Item B.17. Independent public accountant.

Provide the following information about eachthe independent public accountant:

Public accountant Record: 1
a. Full Name	PricewaterhouseCoopers LLP
b. PCAOB Number	238
c. LEI, if any	5493002GVO7EO8RNNS37
d. State, if applicable	PENNSYLVANIA
e. Foreign country, if applicable	UNITED STATES OF AMERICA

f. Has the independent public accountant changed since the last filing?

Yes No

Item B.18. Report on internal control (management investment companies only).

Instruction. Small business investment companies are not required to respond to this item.

For the reporting period, did an independent public accountant's report on internal control note any material weaknesses?

Yes No

Item B.19. Audit opinion.

For the reporting period, did an independent public accountant issue an opinion other than an unqualified opinion with respect to its audit of the Registrant's financial statements?

Yes No

Item B.20. Change in valuation methods.

Instruction. Responses to this item need not include changes to valuation techniques used for individual securities (e.g., changing from market approach to income approach for a private equity security). In responding to Item B.20.c., provide the applicable "asset type" category specified in Item C.4.a. of Form N-PORT. In responding to Item B.20.d., provide a brief description of the type of investments involved. If the change in valuation methods applies only to certain sub-asset types included in the response to Item B.20.c., please provide the sub-asset types in the response to Item B.20.d. The responses to Item B.20.c. and Item B.20.d. should be identical only if the change in valuation methods applies to all assets within that category.

Have there been material changes in the method of valuation (e.g., change from use of bid price to mid price for fixed income securities or change in trigger threshold for use of fair value factors on international equity securities) of the Registrant's assets during the reporting period?

Yes No

If yes, provide the following:

Valuation methods change Record: 1

a. Date of Change	2021-05-03
b. Explanation of the change	Implementation of systematic fair value

c. Asset type involved

1. Short-term investment vehicle    2. Repurchase agreement   3. Equity-common    4. Equity-preferred   5. Debt   6. Derivative-commodity   7. Derivative-credit    8. Derivative-equity    9. Derivative-foreign exchange    10. Derivative-interest rate   11. Derivative-other   12. Structured note    13. Loan    14. ABS-mortgage backed security    15. ABS-asset backed commercial paper    16. ABS-collateralized bond/debt obligation    17. ABS-other    18. Commodity    19. Real estate   20. Other

If "other", provide a brief description

Equity-common, Equity-preferred, Derivative-equity

d. Types of investments involved	International equities, Index futures, and listed and OTC options
e. Statutory or regulatory basis, if any	US GAAP (ASC 820)

f. To the extent the response relates only to certain series of the Registrant, indicate the series involved:

Fund Record: 1
1. Series name	iShares MBS ETF
2. Series identification number	S000013702

Fund Record: 2
1. Series name	iShares New York Muni Bond ETF
2. Series identification number	S000019342

Fund Record: 3
1. Series name	iShares ESG Aware U.S. Aggregate Bond ETF
2. Series identification number	S000062159

Fund Record: 4
1. Series name	iShares 7-10 Year Treasury Bond ETF
2. Series identification number	S000004358

Fund Record: 5
1. Series name	iShares 1-3 Year Treasury Bond ETF
2. Series identification number	S000004357

Fund Record: 6
1. Series name	iShares iBoxx $ Investment Grade Corporate Bond ETF
2. Series identification number	S000004361

Fund Record: 7
1. Series name	iShares 10-20 Year Treasury Bond ETF
2. Series identification number	S000013696

Fund Record: 8
1. Series name	iShares 0-3 Month Treasury Bond ETF
2. Series identification number	S000068768

Fund Record: 9
1. Series name	iShares Government/Credit Bond ETF
2. Series identification number	S000013701

Fund Record: 10
1. Series name	iShares 20+ Year Treasury Bond ETF
2. Series identification number	S000004360

Fund Record: 11
1. Series name	iShares Agency Bond ETF
2. Series identification number	S000023506

Fund Record: 12
1. Series name	iShares iBoxx $ High Yield Corporate Bond ETF
2. Series identification number	S000016772

Fund Record: 13
1. Series name	iShares National Muni Bond ETF
2. Series identification number	S000018861

Fund Record: 14
1. Series name	iShares Intermediate Government/Credit Bond ETF
2. Series identification number	S000013700

Fund Record: 15
1. Series name	iShares 5-10 Year Investment Grade Corporate Bond ETF
2. Series identification number	S000013698

Fund Record: 16
1. Series name	iShares 25+ Year Treasury STRIPS Bond ETF
2. Series identification number	S000069558

Fund Record: 17
1. Series name	iShares High Yield Bond Factor ETF
2. Series identification number	S000057341

Fund Record: 18
1. Series name	iShares Investment Grade Bond Factor ETF
2. Series identification number	S000057342

Fund Record: 19
1. Series name	iShares 3-7 Year Treasury Bond ETF
2. Series identification number	S000013695

Fund Record: 20
1. Series name	iShares Core U.S. Aggregate Bond ETF
2. Series identification number	S000004362

Fund Record: 21
1. Series name	iShares California Muni Bond ETF
2. Series identification number	S000019341

Fund Record: 22
1. Series name	iShares Short Treasury Bond ETF
2. Series identification number	S000013694

Fund Record: 23
1. Series name	iShares ESG Advanced Total USD Bond Market ETF
2. Series identification number	S000068817

Fund Record: 24
1. Series name	iShares 1-5 Year Investment Grade Corporate Bond ETF
2. Series identification number	S000013697

Fund Record: 25
1. Series name	iShares 10+ Year Investment Grade Corporate Bond ETF
2. Series identification number	S000026651

Fund Record: 26
1. Series name	iShares Short-Term National Muni Bond ETF
2. Series identification number	S000023507

Fund Record: 27
1. Series name	iShares ESG Aware USD Corporate Bond ETF
2. Series identification number	S000058037

Fund Record: 28
1. Series name	iShares ESG Aware 1-5 Year USD Corporate Bond ETF
2. Series identification number	S000058036

Fund Record: 29
1. Series name	iShares Core 10+ Year USD Bond ETF
2. Series identification number	S000026652

Fund Record: 30
1. Series name	iShares Broad USD Investment Grade Corporate Bond ETF
2. Series identification number	S000013699

Fund Record: 31
1. Series name	iShares Core 5-10 Year USD Bond ETF
2. Series identification number	S000055401

Item B.21. Change in accounting principles and practices.

Have there been any changes in accounting principles or practices, or any change in the method of applying any such accounting principles or practices, which will materially affect the financial statements filed or to be filed for the current year with the Commission and which has not been previously reported?

Yes No

Item B.22. Net asset value error corrections (open-end management investment companies only).

a. During the reporting period, were any payments made to shareholders or shareholder accounts reprocessed as a result of an error in calculating the Registrant's net asset value (or net asset value per share)?

Yes No

Item B.23. Rule 19a-1 notice (management investment companies only).

During the reporting period, did the Registrant pay any dividend or make any distribution in the nature of a dividend payment, required to be accompanied by a written statement pursuant to section 19(a) of the Act (15 U.S.C. 80a-19(a)) and rule 19a-1 thereunder (17 CFR 270.19a-1)?

Yes No

Payment dividend series info Record: 1
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares USD Bond Factor ETF
ii. Series identification number	S000073477

Payment dividend series info Record: 2
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 10-20 Year Treasury Bond ETF
ii. Series identification number	S000013696

Payment dividend series info Record: 3
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares iBoxx $ Investment Grade Corporate Bond ETF
ii. Series identification number	S000004361

Payment dividend series info Record: 4
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 3-7 Year Treasury Bond ETF
ii. Series identification number	S000013695

Payment dividend series info Record: 5
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 7-10 Year Treasury Bond ETF
ii. Series identification number	S000004358

Payment dividend series info Record: 6
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares iBoxx $ High Yield Corporate Bond ETF
ii. Series identification number	S000016772

Payment dividend series info Record: 7
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Government/Credit Bond ETF
ii. Series identification number	S000013701

Payment dividend series info Record: 8
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares ESG Advanced Investment Grade Corporate Bond ETF
ii. Series identification number	S000074168

Payment dividend series info Record: 9
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 20+ Year Treasury Bond ETF
ii. Series identification number	S000004360

Payment dividend series info Record: 10
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 25+ Year Treasury STRIPS Bond ETF
ii. Series identification number	S000069558

Payment dividend series info Record: 11
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares ESG Aware U.S. Aggregate Bond ETF
ii. Series identification number	S000062159

Payment dividend series info Record: 12
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares MBS ETF
ii. Series identification number	S000013702

Payment dividend series info Record: 13
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 1-5 Year Investment Grade Corporate Bond ETF
ii. Series identification number	S000013697

Payment dividend series info Record: 14
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares National Muni Bond ETF
ii. Series identification number	S000018861

Payment dividend series info Record: 15
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Core U.S. Aggregate Bond ETF
ii. Series identification number	S000004362

Payment dividend series info Record: 16
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Short-Term National Muni Bond ETF
ii. Series identification number	S000023507

Payment dividend series info Record: 17
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares High Yield Bond Factor ETF
ii. Series identification number	S000057341

Payment dividend series info Record: 18
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Intermediate Government/Credit Bond ETF
ii. Series identification number	S000013700

Payment dividend series info Record: 19
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Core 10+ Year USD Bond ETF
ii. Series identification number	S000026652

Payment dividend series info Record: 20
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares California Muni Bond ETF
ii. Series identification number	S000019341

Payment dividend series info Record: 21
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares New York Muni Bond ETF
ii. Series identification number	S000019342

Payment dividend series info Record: 22
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Core 5-10 Year USD Bond ETF
ii. Series identification number	S000055401

Payment dividend series info Record: 23
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares ESG Aware USD Corporate Bond ETF
ii. Series identification number	S000058037

Payment dividend series info Record: 24
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares BBB Rated Corporate Bond ETF
ii. Series identification number	S000071770

Payment dividend series info Record: 25
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares ESG Aware 1-5 Year USD Corporate Bond ETF
ii. Series identification number	S000058036

Payment dividend series info Record: 26
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Investment Grade Bond Factor ETF
ii. Series identification number	S000057342

Payment dividend series info Record: 27
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 10+ Year Investment Grade Corporate Bond ETF
ii. Series identification number	S000026651

Payment dividend series info Record: 28
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 1-3 Year Treasury Bond ETF
ii. Series identification number	S000004357

Payment dividend series info Record: 29
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares ESG Advanced Total USD Bond Market ETF
ii. Series identification number	S000068817

Payment dividend series info Record: 30
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 0-3 Month Treasury Bond ETF
ii. Series identification number	S000068768

Payment dividend series info Record: 31
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Broad USD Investment Grade Corporate Bond ETF
ii. Series identification number	S000013699

Payment dividend series info Record: 32
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares 5-10 Year Investment Grade Corporate Bond ETF
ii. Series identification number	S000013698

Payment dividend series info Record: 33
a. If yes, and to the extent the response relates only to certain series of the Registrant, indicate the series involved:
i. Series name	iShares Agency Bond ETF
ii. Series identification number	S000023506

General Instruction. Management investment companies that offer multiple series must complete Part C as to each series separately, even if some information is the same for two or more series. To begin this section or add an additional series(s), click on the bar labeled "Add a New Series" below.

Management Investment Record: 1

Item C.1. Background information.

a. Full Name of the Fund	iShares Agency Bond ETF
b. Series identication number, if any	S000023506
c. LEI	54930076RN5EDP4FSR30
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares Agency Bond ETF
ii. Class identification number, if any	C000069125
iii. Ticker symbol, if any	AGZ

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: 0.47000000  2. After Fund fees and expenses (i.e., net asset value): 0.27000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.69000000  2. After Fund fees and expenses (i.e., net asset value): 0.69000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	3,514,623.68000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	BofA Securities, Inc.
ii. LEI, if any	549300HN4UKV1E2R3U73
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	125,250,245.63000000
Principal Transactions Record: 2
i. Full name of dealer	BNY Mellon Capital Markets, LLC
ii. SEC file number	8-35255
iii. CRD number	000017454
iv. LEI, if any	VJW2DOOHGDT6PR0ZRO63
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	170,736,291.06000000
Principal Transactions Record: 3
i. Full name of dealer	Deutsche Bank Securities Inc.
ii. SEC file number	8-17822
iii. CRD number	000002525
iv. LEI, if any	9J6MBOOO7BECTDTUZW19
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	185,782,847.27000000
Principal Transactions Record: 4
i. Full name of dealer	Natwest Markets Securities Inc.
ii. SEC file number	8-37135
iii. CRD number	000011707
iv. LEI, if any	ZE2ZWJ5BTIQJ8M0C6K34
v. State, if applicable	CONNECTICUT
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	136,781,322.50000000
Principal Transactions Record: 5
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	170,643,433.08000000
Principal Transactions Record: 6
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	591,828,713.92000000
Principal Transactions Record: 7
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	320,644,560.30000000
Principal Transactions Record: 8
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,054,900,000.00000000
Principal Transactions Record: 9
i. Full name of dealer	Wells Fargo Securities, LLC
ii. SEC file number	8-65876
iii. CRD number	000126292
iv. LEI, if any	VYVVCKR63DVZZN70PB21
v. State, if applicable	NORTH CAROLINA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	240,098,856.66000000
Principal Transactions Record: 10
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	545,138,815.51000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

4,233,555,835.94000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	790,103,887.49846153
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 2

Item C.1. Background information.

a. Full Name of the Fund	iShares 1-5 Year Investment Grade Corporate Bond ETF
b. Series identication number, if any	S000013697
c. LEI	549300T14S5IX7V5T008
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares 1-5 Year Investment Grade Corporate Bond ETF
ii. Class identification number, if any	C000037539
iii. Ticker symbol, if any	IGSB

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: 0.01000000  2. After Fund fees and expenses (i.e., net asset value): -0.05000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.31000000  2. After Fund fees and expenses (i.e., net asset value): 0.31000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund  i. If the Registrant is a master fund, then provide the information requested below with respect to each feeder fund: Feeder funds Record: 1 1. Full name iShares 1-5 Year U.S. IG Corporate Bond Index ETF (CAD-Hedged)  2. For registered feeder funds: A. Investment Company Act file number (e.g., 811-) N/A  B. Series identification number, if any N/A  C. LEI of feeder fund N/A  3. For unregistered feeder funds: A. SEC file number of the feeder fund's investment adviser (e.g., 801-) N/A  B. LEI of feeder fund, if any 549300C2OIXPIGE0WM76  Feeder funds Record: 2 1. Full name iShares 1-5 Year U.S. IG Corporate Bond Index ETF  2. For registered feeder funds: A. Investment Company Act file number (e.g., 811-) N/A  B. Series identification number, if any N/A  C. LEI of feeder fund N/A  3. For unregistered feeder funds: A. SEC file number of the feeder fund's investment adviser (e.g., 801-) N/A  B. LEI of feeder fund, if any 549300L3FWVGXNDQQB47  ii. If the Registrant is a feeder fund, then provide the information requested below with respect to a master fund registered under the Act:

 g.    Money Market Fund 
 h.    Target Date Fund 
 i.     Underlying fund to a variable annuity or variable life insurance contract 
        N/A 

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	1,105,395,775.16000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	SG Americas Securities, LLC
ii. LEI, if any	549300F35UE0BOM1WJ55
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 3
i. Full name	Euroclear Bank
ii. LEI, if any	549300OZ46BRLZ8Y6F65
iii. State, if applicable
iv. Foreign country, if applicable	BELGIUM
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	National Securities Clearing Corporation
ii. SEC file number	8-164
iii. CRD number	000007569
iv. LEI, if any	549300RYC9NELN2ICA34
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	5,836,877,545.55000000
Principal Transactions Record: 2
i. Full name of dealer	RBC Capital Markets, LLC
ii. SEC file number	8-45411
iii. CRD number	000031194
iv. LEI, if any	549300LCO2FLSSVFFR64
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	468,019,950.62000000
Principal Transactions Record: 3
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,773,359,751.84000000
Principal Transactions Record: 4
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	2,254,301,010.45000000
Principal Transactions Record: 5
i. Full name of dealer	Pershing LLC
ii. SEC file number	8-17574
iii. CRD number	000007560
iv. LEI, if any	ZI8Q1A8EI8LQFJNM0D94
v. State, if applicable	NEW JERSEY
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,025,575,662.68000000
Principal Transactions Record: 6
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	6,662,540,000.00000000
Principal Transactions Record: 7
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	2,847,783,356.75000000
Principal Transactions Record: 8
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	965,538,167.80000000
Principal Transactions Record: 9
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	5,334,213,229.57000000
Principal Transactions Record: 10
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	5,779,404,520.05000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

37,035,562,609.90000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	24,322,117,637.27846153
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 3

Item C.1. Background information.

a. Full Name of the Fund	iShares 10-20 Year Treasury Bond ETF
b. Series identication number, if any	S000013696
c. LEI	549300MH5J7BUV0VS287
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares 10-20 Year Treasury Bond ETF
ii. Class identification number, if any	C000037538
iii. Ticker symbol, if any	TLH

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: -0.89000000  2. After Fund fees and expenses (i.e., net asset value): -1.04000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 2.12000000  2. After Fund fees and expenses (i.e., net asset value): 2.12000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	51,552,583.04000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	Wells Fargo Securities, LLC
ii. LEI, if any	VYVVCKR63DVZZN70PB21
iii. State, if applicable	NORTH CAROLINA
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	748,764,806.99000000
Principal Transactions Record: 2
i. Full name of dealer	Natwest Markets Securities Inc.
ii. SEC file number	8-37135
iii. CRD number	000011707
iv. LEI, if any	ZE2ZWJ5BTIQJ8M0C6K34
v. State, if applicable	CONNECTICUT
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	148,411,980.06000000
Principal Transactions Record: 3
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	475,527,000.00000000
Principal Transactions Record: 4
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	227,212,102.18000000
Principal Transactions Record: 5
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,071,147,607.75000000
Principal Transactions Record: 6
i. Full name of dealer	Wells Fargo Securities, LLC
ii. SEC file number	8-65876
iii. CRD number	000126292
iv. LEI, if any	VYVVCKR63DVZZN70PB21
v. State, if applicable	NORTH CAROLINA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	306,556,256.29000000
Principal Transactions Record: 7
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,292,659,932.87000000
Principal Transactions Record: 8
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	138,752,364.29000000
Principal Transactions Record: 9
i. Full name of dealer	BNY Mellon Capital Markets, LLC
ii. SEC file number	8-35255
iii. CRD number	000017454
iv. LEI, if any	VJW2DOOHGDT6PR0ZRO63
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	382,046,601.79000000
Principal Transactions Record: 10
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	958,058,560.05000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

5,947,524,268.15000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	1,434,642,025.44384615
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 4

Item C.1. Background information.

a. Full Name of the Fund	iShares Intermediate Government/Credit Bond ETF
b. Series identication number, if any	S000013700
c. LEI	549300USOBX01WS0GK74
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares Intermediate Government/Credit Bond ETF
ii. Class identification number, if any	C000037542
iii. Ticker symbol, if any	GVI

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: 0.05000000  2. After Fund fees and expenses (i.e., net asset value): -0.15000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.59000000  2. After Fund fees and expenses (i.e., net asset value): 0.59000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	83,154,594.78000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	120,411,456.99000000
Principal Transactions Record: 2
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	383,961,396.32000000
Principal Transactions Record: 3
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	476,071,099.96000000
Principal Transactions Record: 4
i. Full name of dealer	Wells Fargo Securities, LLC
ii. SEC file number	8-65876
iii. CRD number	000126292
iv. LEI, if any	VYVVCKR63DVZZN70PB21
v. State, if applicable	NORTH CAROLINA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	121,078,607.06000000
Principal Transactions Record: 5
i. Full name of dealer	Commerz Markets LLC
ii. SEC file number	8-49647
iii. CRD number	000041957
iv. LEI, if any	549300IMBXQ8SGH3HJ31
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	140,296,524.92000000
Principal Transactions Record: 6
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	369,380,000.00000000
Principal Transactions Record: 7
i. Full name of dealer	HSBC Securities (USA) Inc.
ii. SEC file number	8-41562
iii. CRD number	000019585
iv. LEI, if any	CYYGQCGNHMHPSMRL3R97
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	94,455,588.65000000
Principal Transactions Record: 8
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	192,322,374.79000000
Principal Transactions Record: 9
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	369,944,749.32000000
Principal Transactions Record: 10
i. Full name of dealer	Jane Street Capital, LLC
ii. SEC file number	8-52275
iii. CRD number	000103782
iv. LEI, if any	549300ZM16HMPEPNV857
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	75,894,476.93000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

2,853,234,347.36000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	2,458,869,045.88153846
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 5

Item C.1. Background information.

a. Full Name of the Fund	iShares BBB Rated Corporate Bond ETF
b. Series identication number, if any	S000071770
c. LEI	549300LLQ2RTRMS0KN04
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares BBB Rated Corporate Bond ETF
ii. Class identification number, if any	C000227271
iii. Ticker symbol, if any	LQDB

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: 0.24000000  2. After Fund fees and expenses (i.e., net asset value): 0.09000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.87000000  2. After Fund fees and expenses (i.e., net asset value): 0.87000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	2,700,953.87000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	16,923,992.80000000
Principal Transactions Record: 2
i. Full name of dealer	MarketAxess Corporation
ii. SEC file number	8-50727
iii. CRD number	000044542
iv. LEI, if any	GPSMMRI21JE7ZCVYF972
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,056,384.50000000
Principal Transactions Record: 3
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,352,356.85000000
Principal Transactions Record: 4
i. Full name of dealer	Pershing LLC
ii. SEC file number	8-17574
iii. CRD number	000007560
iv. LEI, if any	ZI8Q1A8EI8LQFJNM0D94
v. State, if applicable	NEW JERSEY
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,388,148.05000000
Principal Transactions Record: 5
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	17,199,425.31000000
Principal Transactions Record: 6
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	16,975,490.36000000
Principal Transactions Record: 7
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	18,560,627.76000000
Principal Transactions Record: 8
i. Full name of dealer	Deutsche Bank Securities Inc.
ii. SEC file number	8-17822
iii. CRD number	000002525
iv. LEI, if any	9J6MBOOO7BECTDTUZW19
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,288,188.00000000
Principal Transactions Record: 9
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	14,710,000.00000000
Principal Transactions Record: 10
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	17,537,449.11000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

113,271,433.87000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	75,909,641.66300000
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 6

Item C.1. Background information.

a. Full Name of the Fund	iShares Short-Term National Muni Bond ETF
b. Series identication number, if any	S000023507
c. LEI	5493006UX6BTVQQ8GI65
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares Short-Term National Muni Bond ETF
ii. Class identification number, if any	C000069126
iii. Ticker symbol, if any	SUB

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: 0.02000000  2. After Fund fees and expenses (i.e., net asset value): -0.05000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.11000000  2. After Fund fees and expenses (i.e., net asset value): 0.11000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	N/A
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	BlackRock Liquidity Funds - MuniCash
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	549300RWBJ885673DL84
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	3,819,854,791.26000000
Principal Transactions Record: 2
i. Full name of dealer	Hilltop Securities Inc.
ii. SEC file number	8-45123
iii. CRD number	000006220
iv. LEI, if any	549300IXU82PMU6XZT45
v. State, if applicable	TEXAS
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	83,084,900.95000000
Principal Transactions Record: 3
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	256,062,794.50000000
Principal Transactions Record: 4
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	247,804,579.05000000
Principal Transactions Record: 5
i. Full name of dealer	National Financial Services LLC
ii. SEC file number	8-26740
iii. CRD number	000013041
iv. LEI, if any	549300JRHF1MHHWUAW04
v. State, if applicable	MASSACHUSETTS
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	83,468,680.25000000
Principal Transactions Record: 6
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,701,395,908.20000000
Principal Transactions Record: 7
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,499,142,573.75000000
Principal Transactions Record: 8
i. Full name of dealer	Ice Securities Execution & Clearing, LLC
ii. SEC file number	8-70258
iii. CRD number	000299634
iv. LEI, if any	549300Q54HHOIVWCEN57
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	67,802,651.70000000
Principal Transactions Record: 9
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	577,785,246.55000000
Principal Transactions Record: 10
i. Full name of dealer	Wells Fargo Securities, LLC
ii. SEC file number	8-65876
iii. CRD number	000126292
iv. LEI, if any	VYVVCKR63DVZZN70PB21
v. State, if applicable	NORTH CAROLINA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	180,199,669.90000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

8,645,076,937.51000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	5,774,107,198.04615384
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 7

Item C.1. Background information.

a. Full Name of the Fund	iShares 1-3 Year Treasury Bond ETF
b. Series identication number, if any	S000004357
c. LEI	549300W0WX9TL4G6HM56
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares 1-3 Year Treasury Bond ETF
ii. Class identification number, if any	C000012087
iii. Ticker symbol, if any	SHY

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: 0.01000000  2. After Fund fees and expenses (i.e., net asset value): -0.14000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.23000000  2. After Fund fees and expenses (i.e., net asset value): 0.23000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	992,283,402.83000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	SG Americas Securities, LLC
ii. LEI, if any	549300F35UE0BOM1WJ55
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	18,209,058,000.00000000
Principal Transactions Record: 2
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	24,496,722,756.05000000
Principal Transactions Record: 3
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	5,727,713,608.74000000
Principal Transactions Record: 4
i. Full name of dealer	Daiwa Capital Markets America Inc.
ii. SEC file number	8-12242
iii. CRD number	000001576
iv. LEI, if any	M67H5PRC0NQKM73ZAS82
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	3,279,842,843.24000000
Principal Transactions Record: 5
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	8,602,271,462.72000000
Principal Transactions Record: 6
i. Full name of dealer	Natwest Markets Securities Inc.
ii. SEC file number	8-37135
iii. CRD number	000011707
iv. LEI, if any	ZE2ZWJ5BTIQJ8M0C6K34
v. State, if applicable	CONNECTICUT
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	2,165,885,470.31000000
Principal Transactions Record: 7
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	9,840,739,474.60000000
Principal Transactions Record: 8
i. Full name of dealer	BNY Mellon Capital Markets, LLC
ii. SEC file number	8-35255
iii. CRD number	000017454
iv. LEI, if any	VJW2DOOHGDT6PR0ZRO63
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	3,710,064,482.26000000
Principal Transactions Record: 9
i. Full name of dealer	HSBC Securities (USA) Inc.
ii. SEC file number	8-41562
iii. CRD number	000019585
iv. LEI, if any	CYYGQCGNHMHPSMRL3R97
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	2,340,658,969.15000000
Principal Transactions Record: 10
i. Full name of dealer	Wells Fargo Securities, LLC
ii. SEC file number	8-65876
iii. CRD number	000126292
iv. LEI, if any	VYVVCKR63DVZZN70PB21
v. State, if applicable	NORTH CAROLINA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	3,680,099,339.46000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

92,370,536,052.95000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	19,966,708,324.61076923
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 8

Item C.1. Background information.

a. Full Name of the Fund	iShares 20+ Year Treasury Bond ETF
b. Series identication number, if any	S000004360
c. LEI	549300WWURKS1JGBZU59
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares 20+ Year Treasury Bond ETF
ii. Class identification number, if any	C000012090
iii. Ticker symbol, if any	TLT

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: -1.22000000  2. After Fund fees and expenses (i.e., net asset value): -1.37000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 2.78000000  2. After Fund fees and expenses (i.e., net asset value): 2.78000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	370,342,287.99000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	Wells Fargo Securities, LLC
ii. LEI, if any	VYVVCKR63DVZZN70PB21
iii. State, if applicable	NORTH CAROLINA
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	3,029,494,236.98000000
Principal Transactions Record: 2
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	14,544,937,204.47000000
Principal Transactions Record: 3
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	4,036,109,515.81000000
Principal Transactions Record: 4
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	3,473,720,726.58000000
Principal Transactions Record: 5
i. Full name of dealer	BNP Paribas Securities Corp.
ii. SEC file number	8-32682
iii. CRD number	000015794
iv. LEI, if any	RCNB6OTYUAMMP879YW96
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,515,723,059.67000000
Principal Transactions Record: 6
i. Full name of dealer	SG Americas Securities, LLC
ii. SEC file number	8-66125
iii. CRD number	000128351
iv. LEI, if any	549300F35UE0BOM1WJ55
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	4,365,193,678.66000000
Principal Transactions Record: 7
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	3,580,556,002.87000000
Principal Transactions Record: 8
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	38,961,477,109.81000000
Principal Transactions Record: 9
i. Full name of dealer	Deutsche Bank Securities Inc.
ii. SEC file number	8-17822
iii. CRD number	000002525
iv. LEI, if any	9J6MBOOO7BECTDTUZW19
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	4,544,193,619.11000000
Principal Transactions Record: 10
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	2,088,368,000.00000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

82,319,778,777.27000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	15,569,330,450.58538461
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 9

Item C.1. Background information.

a. Full Name of the Fund	iShares ESG Advanced Investment Grade Corporate Bond ETF
b. Series identication number, if any	S000074168
c. LEI	5493009S7WQUPRT4T556
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares ESG Advanced Investment Grade Corporate Bond ETF
ii. Class identification number, if any	C000231752
iii. Ticker symbol, if any	ELQD

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: 0.22000000  2. After Fund fees and expenses (i.e., net asset value): 0.03000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.95000000  2. After Fund fees and expenses (i.e., net asset value): 0.95000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	69,161.27000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	RBC Capital Markets, LLC
ii. SEC file number	8-45411
iii. CRD number	000031194
iv. LEI, if any	549300LCO2FLSSVFFR64
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	500,692.05000000
Principal Transactions Record: 2
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	2,484,513.00000000
Principal Transactions Record: 3
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	7,183,978.71000000
Principal Transactions Record: 4
i. Full name of dealer	National Financial Services LLC
ii. SEC file number	8-26740
iii. CRD number	000013041
iv. LEI, if any	549300JRHF1MHHWUAW04
v. State, if applicable	MASSACHUSETTS
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	680,823.00000000
Principal Transactions Record: 5
i. Full name of dealer	Deutsche Bank Securities Inc.
ii. SEC file number	8-17822
iii. CRD number	000002525
iv. LEI, if any	9J6MBOOO7BECTDTUZW19
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	2,089,034.75000000
Principal Transactions Record: 6
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	880,000.00000000
Principal Transactions Record: 7
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,595,940.95000000
Principal Transactions Record: 8
i. Full name of dealer	Pershing LLC
ii. SEC file number	8-17574
iii. CRD number	000007560
iv. LEI, if any	ZI8Q1A8EI8LQFJNM0D94
v. State, if applicable	NEW JERSEY
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	891,033.70000000
Principal Transactions Record: 9
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	3,661,622.70000000
Principal Transactions Record: 10
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,253,876.20000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

23,148,212.40000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	19,306,441.06500000
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 10

Item C.1. Background information.

a. Full Name of the Fund	iShares iBoxx $ Investment Grade Corporate Bond ETF
b. Series identication number, if any	S000004361
c. LEI	549300FYCXFXG8POR355
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares iBoxx $ Investment Grade Corporate Bond ETF
ii. Class identification number, if any	C000012091
iii. Ticker symbol, if any	LQD

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: -0.37000000  2. After Fund fees and expenses (i.e., net asset value): -0.51000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 1.06000000  2. After Fund fees and expenses (i.e., net asset value): 1.06000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund  i. If the Registrant is a master fund, then provide the information requested below with respect to each feeder fund: Feeder funds Record: 1 1. Full name iShares U.S. IG Corporate Bond Index ETF (CAD-Hedged)  2. For registered feeder funds: A. Investment Company Act file number (e.g., 811-) N/A  B. Series identification number, if any N/A  C. LEI of feeder fund N/A  3. For unregistered feeder funds: A. SEC file number of the feeder fund's investment adviser (e.g., 801-) N/A  B. LEI of feeder fund, if any GTOHDQTL64Z202HQYF91  Feeder funds Record: 2 1. Full name iShares USD Investment Grade Corporate Bond JPY Hedged ETF  2. For registered feeder funds: A. Investment Company Act file number (e.g., 811-) N/A  B. Series identification number, if any N/A  C. LEI of feeder fund N/A  3. For unregistered feeder funds: A. SEC file number of the feeder fund's investment adviser (e.g., 801-) N/A  B. LEI of feeder fund, if any 3538009W6RXDDKB43Y23  Feeder funds Record: 3 1. Full name iShares U.S. IG Corporate Bond Index ETF  2. For registered feeder funds: A. Investment Company Act file number (e.g., 811-) N/A  B. Series identification number, if any N/A  C. LEI of feeder fund N/A  3. For unregistered feeder funds: A. SEC file number of the feeder fund's investment adviser (e.g., 801-) N/A  B. LEI of feeder fund, if any 549300D6X6BFDA8J5E77  ii. If the Registrant is a feeder fund, then provide the information requested below with respect to a master fund registered under the Act:

 g.    Money Market Fund 
 h.    Target Date Fund 
 i.     Underlying fund to a variable annuity or variable life insurance contract 
        N/A 

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	2,276,715,927.38000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	Wells Fargo Securities, LLC
ii. LEI, if any	VYVVCKR63DVZZN70PB21
iii. State, if applicable	NORTH CAROLINA
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	9,721,922,912.49000000
Principal Transactions Record: 2
i. Full name of dealer	Deutsche Bank Securities Inc.
ii. SEC file number	8-17822
iii. CRD number	000002525
iv. LEI, if any	9J6MBOOO7BECTDTUZW19
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,067,402,795.07000000
Principal Transactions Record: 3
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	12,910,164,580.55000000
Principal Transactions Record: 4
i. Full name of dealer	National Securities Clearing Corporation
ii. SEC file number	8-164
iii. CRD number	000007569
iv. LEI, if any	549300RYC9NELN2ICA34
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	38,064,781,581.04000000
Principal Transactions Record: 5
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	16,278,866,170.91000000
Principal Transactions Record: 6
i. Full name of dealer	RBC Capital Markets, LLC
ii. SEC file number	8-45411
iii. CRD number	000031194
iv. LEI, if any	549300LCO2FLSSVFFR64
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	554,457,390.58000000
Principal Transactions Record: 7
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	8,242,080,000.00000000
Principal Transactions Record: 8
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	5,532,058,105.08000000
Principal Transactions Record: 9
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	16,398,971,956.54000000
Principal Transactions Record: 10
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	1,628,339,920.73000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

114,208,937,646.06000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	39,920,453,107.97846153
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 11

Item C.1. Background information.

a. Full Name of the Fund	iShares California Muni Bond ETF
b. Series identication number, if any	S000019341
c. LEI	5493005PBQ3IFT3REX09
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares California Muni Bond ETF
ii. Class identification number, if any	C000053739
iii. Ticker symbol, if any	CMF

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: 0.07000000  2. After Fund fees and expenses (i.e., net asset value): -0.18000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.21000000  2. After Fund fees and expenses (i.e., net asset value): 0.21000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	N/A
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	182,236,596.43000000
Principal Transactions Record: 2
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	17,330,748.00000000
Principal Transactions Record: 3
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	191,250,103.45000000
Principal Transactions Record: 4
i. Full name of dealer	Pershing LLC
ii. SEC file number	8-17574
iii. CRD number	000007560
iv. LEI, if any	ZI8Q1A8EI8LQFJNM0D94
v. State, if applicable	NEW JERSEY
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	5,867,098.80000000
Principal Transactions Record: 5
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	105,778,519.00000000
Principal Transactions Record: 6
i. Full name of dealer	Jefferies LLC
ii. SEC file number	8-15074
iii. CRD number	000002347
iv. LEI, if any	58PU97L1C0WSRCWADL48
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	4,718,633.20000000
Principal Transactions Record: 7
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	35,068,395.80000000
Principal Transactions Record: 8
i. Full name of dealer	Jane Street Capital, LLC
ii. SEC file number	8-52275
iii. CRD number	000103782
iv. LEI, if any	549300ZM16HMPEPNV857
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	13,577,818.68000000
Principal Transactions Record: 9
i. Full name of dealer	BlackRock Liquidity Funds - California Money Fund
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	549300E5GIHTAGOVRB65
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	601,492,494.34000000
Principal Transactions Record: 10
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	7,101,665.55000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

1,176,540,258.95000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	1,846,111,316.96769230
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 12

Item C.1. Background information.

a. Full Name of the Fund	iShares Core 5-10 Year USD Bond ETF
b. Series identication number, if any	S000055401
c. LEI	549300E5GUSCE00FIQ17
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares Core 5-10 Year USD Bond ETF
ii. Class identification number, if any	C000174365
iii. Ticker symbol, if any	IMTB

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: -0.11000000  2. After Fund fees and expenses (i.e., net asset value): -0.16000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.59000000  2. After Fund fees and expenses (i.e., net asset value): 0.59000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	2,158,628.26000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	J.P. Morgan Securities LLC
ii. LEI, if any	ZBUT11V806EZRVTWT807
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 3
i. Full name	Euroclear Bank
ii. LEI, if any	549300OZ46BRLZ8Y6F65
iii. State, if applicable
iv. Foreign country, if applicable	BELGIUM
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

Brokers Record: 1
i. Full name of broker	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Gross commissions paid by the Fund for the reporting period	0.94000000
Brokers Record: 2
i. Full name of broker	Pershing LLC
ii. SEC file number	8-17574
iii. CRD number	000007560
iv. LEI, if any	ZI8Q1A8EI8LQFJNM0D94
v. State, if applicable	NEW JERSEY
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Gross commissions paid by the Fund for the reporting period	2.06000000
Brokers Record: 3
i. Full name of broker	Raymond James & Associates, Inc.
ii. SEC file number	8-10999
iii. CRD number	000000705
iv. LEI, if any	U4ONQX15J3RO8XCKE979
v. State, if applicable	FLORIDA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Gross commissions paid by the Fund for the reporting period	1.19000000
Brokers Record: 4
i. Full name of broker	National Financial Services LLC
ii. SEC file number	8-26740
iii. CRD number	000013041
iv. LEI, if any	549300JRHF1MHHWUAW04
v. State, if applicable	MASSACHUSETTS
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Gross commissions paid by the Fund for the reporting period	0.18000000
Brokers Record: 5
i. Full name of broker	Wells Fargo Securities, LLC
ii. SEC file number	8-65876
iii. CRD number	000126292
iv. LEI, if any	VYVVCKR63DVZZN70PB21
v. State, if applicable	NORTH CAROLINA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Gross commissions paid by the Fund for the reporting period	0.24000000
b. Aggregate brokerage commissions paid by Fund during the reporting period:	4.61000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	106,573,272.39000000
Principal Transactions Record: 2
i. Full name of dealer	Nomura Securities International, Inc.
ii. SEC file number	8-15255
iii. CRD number	000004297
iv. LEI, if any	OXTKY6Q8X53C9ILVV871
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	30,095,880.68000000
Principal Transactions Record: 3
i. Full name of dealer	Credit Suisse Securities (USA) LLC
ii. SEC file number	8-422
iii. CRD number	000000816
iv. LEI, if any	1V8Y6QCX6YMJ2OELII46
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	66,927,261.20000000
Principal Transactions Record: 4
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	142,527,833.49000000
Principal Transactions Record: 5
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	57,376,594.91000000
Principal Transactions Record: 6
i. Full name of dealer	Wells Fargo Securities, LLC
ii. SEC file number	8-65876
iii. CRD number	000126292
iv. LEI, if any	VYVVCKR63DVZZN70PB21
v. State, if applicable	NORTH CAROLINA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	23,790,007.16000000
Principal Transactions Record: 7
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	23,284,956.74000000
Principal Transactions Record: 8
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	122,488,966.22000000
Principal Transactions Record: 9
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	95,219,738.45000000
Principal Transactions Record: 10
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Institutional
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	549300JDHS1T46VWOG19
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	79,333,240.45000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

784,662,387.10000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	126,470,223.86846153
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 13

Item C.1. Background information.

a. Full Name of the Fund	iShares ESG Advanced Total USD Bond Market ETF
b. Series identication number, if any	S000068817
c. LEI	5493003MW3304SOSOX56
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares ESG Advanced Total USD Bond Market ETF
ii. Class identification number, if any	C000219898
iii. Ticker symbol, if any	EUSB

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: -0.05000000  2. After Fund fees and expenses (i.e., net asset value): -0.16000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.70000000  2. After Fund fees and expenses (i.e., net asset value): 0.70000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund   g.    Money Market Fund   h.    Target Date Fund   i.     Underlying fund to a variable annuity or variable life insurance contract          N/A

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	6,352,805.03000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	Euroclear Bank
ii. LEI, if any	549300OZ46BRLZ8Y6F65
iii. State, if applicable
iv. Foreign country, if applicable	BELGIUM
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 3
i. Full name	Wells Fargo Securities, LLC
ii. LEI, if any	VYVVCKR63DVZZN70PB21
iii. State, if applicable	NORTH CAROLINA
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrator a sub-administrator?	Yes No

b.Has a third-party administrator been hired or terminated during the reporting period?

Yes No

Item C.15. Affiliated broker-dealers.

Provide the following information about each affiliated broker-dealer:

Broker Dealers Record: 1
a. Full name	BlackRock Investments, LLC
b. SEC file number	8-48436
c. CRD number	000038642
d. LEI, if any	54930061FBHCKXL2G714
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000
Broker Dealers Record: 2
a. Full name	BlackRock Execution Services
b. SEC file number	8-48719
c. CRD number	000039438
d. LEI, if any	549300HFCRQ0NT5KY652
e. State, if applicable	NEW YORK
f. Foreign country, if applicable	UNITED STATES OF AMERICA
g. Total commissions paid to the affiliated broker-dealer for the reporting period:	0.00000000

Item C.16. Brokers.

Instructions to Item C.16 and Item C.17. To help Registrants distinguish between agency and principal transactions, and to promote consistent reporting of the information required by these items, the following criteria should be used: 1. If a security is purchased or sold in a transaction for which the confirmation specifies the amount of the commission to be paid by the Registrant, the transaction should be considered an agency transaction and included in determining the answers to Item C.16. 2. If a security is purchased or sold in a transaction for which the confirmation specifies only the net amount to be paid or received by the Registrant and such net amount is equal to the market value of the security at the time of the transaction, the transaction should be considered a principal transaction and included in determining the amounts in Item C.17. 3. If a security is purchased by the Registrant in an underwritten offering, the acquisition should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the underwriters are receiving from the issuer. 4. If a security is sold by the Registrant in a tender offer, the sale should be considered a principal transaction and included in answering Item C.17 even though the Registrant has knowledge of the amount the offeror is paying to soliciting brokers or dealers. 5. If a security is purchased directly from the issuer (such as a bank CD), the purchase should be considered a principal transaction and included in answering Item C.17. 6. The value of called or maturing securities should not be counted in either agency or principal transactions and should not be included in determining the amounts shown in Item C.16 and Item C.17. This means that the acquisition of a security may be included, but it is possible that its disposition may not be included. Disposition of a repurchase agreement at its expiration date should not be included. 7. The purchase or sales of securities in transactions not described in paragraphs (1) through (6) above should be evaluated by the Fund based upon the guidelines established in those paragraphs and classified accordingly. The agents considered in Item C.16 may be persons or companies not registered under the Exchange Act as securities brokers. The persons or companies from whom the investment company purchased or to whom it sold portfolio instruments on a principal basis may be persons or entities not registered under the Exchange Act as securities dealers.

a. For each of the ten brokers that received the largest dollar amount of brokerage commissions (excluding dealer concessions in underwritings) by virtue of direct or indirect participation in the Fund’s portfolio transactions, provide the information below:

i. Full name of broker
ii. SEC file number
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Gross commissions paid by the Fund for the reporting period

b. Aggregate brokerage commissions paid by Fund during the reporting period:	0.00000000

Item C.17. Principal transactions.

a. For each of the ten entities acting as principals with which the Fund did the largest dollar amount of principal transactions (include all short-term obligations, and U.S. government and tax-free securities) in both the secondary market and in underwritten offerings, provide the information below:

Principal Transactions Record: 1
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Institutional
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	549300JDHS1T46VWOG19
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	298,141,905.36000000
Principal Transactions Record: 2
i. Full name of dealer	BlackRock Funds III - BlackRock Cash Funds: Treasury
ii. SEC file number	N/A
iii. CRD number	N/A
iv. LEI, if any	5493005PQV5UQG4OSI49
v. State, if applicable	DELAWARE
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	121,630,000.00000000
Principal Transactions Record: 3
i. Full name of dealer	Goldman Sachs & Co. LLC
ii. SEC file number	8-129
iii. CRD number	000000361
iv. LEI, if any	FOR8UP27PHTHYVLBNG30
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	195,480,769.34000000
Principal Transactions Record: 4
i. Full name of dealer	BofA Securities, Inc.
ii. SEC file number	8-69787
iii. CRD number	000283942
iv. LEI, if any	549300HN4UKV1E2R3U73
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	456,487,456.47000000
Principal Transactions Record: 5
i. Full name of dealer	J.P. Morgan Securities LLC
ii. SEC file number	8-35008
iii. CRD number	000000079
iv. LEI, if any	ZBUT11V806EZRVTWT807
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	349,445,611.97000000
Principal Transactions Record: 6
i. Full name of dealer	Citigroup Global Markets Inc.
ii. SEC file number	8-8177
iii. CRD number	000007059
iv. LEI, if any	MBNUM2BPBDO7JBLYG310
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	446,235,095.69000000
Principal Transactions Record: 7
i. Full name of dealer	Nomura Securities International, Inc.
ii. SEC file number	8-15255
iii. CRD number	000004297
iv. LEI, if any	OXTKY6Q8X53C9ILVV871
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	79,133,770.57000000
Principal Transactions Record: 8
i. Full name of dealer	Barclays Capital Inc.
ii. SEC file number	8-41342
iii. CRD number	000019714
iv. LEI, if any	AC28XWWI3WIBK2824319
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	89,172,982.32000000
Principal Transactions Record: 9
i. Full name of dealer	Credit Suisse Securities (USA) LLC
ii. SEC file number	8-422
iii. CRD number	000000816
iv. LEI, if any	1V8Y6QCX6YMJ2OELII46
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	176,250,846.87000000
Principal Transactions Record: 10
i. Full name of dealer	Morgan Stanley & Co. LLC
ii. SEC file number	8-15869
iii. CRD number	000008209
iv. LEI, if any	9R7GPTSO7KV3UQJZQ078
v. State, if applicable	NEW YORK
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Total value of purchases and sales (excluding maturing securities) with Fund:	489,551,713.39000000

b. Aggregate value of principal purchase/sale transactions of Fund during the reporting period:

2,934,312,507.07000000

Item C.18. Payments for brokerage and research.

During the reporting period, did the Fund pay commissions to broker-dealers for "brokerage and research services" within the meaning of section 28(e) of the Exchange Act (15 U.S.C. 78bb)?

Yes No

Item C.19. Average net assets.

a. Provide the Fund's (other than a money market fund's) monthly average net assets during the reporting period	426,920,161.21461538
b. Provide the money market fund's daily average net assets during the reporting period

Item C.20. Lines of credit, interfund lending and interfund borrowing.

For open-end management investment companies, respond to the following:

a. Does the Fund have available a line of credit?

Yes No

b. Did the Fund engage in interfund lending?	Yes No

c.Did the Fund engage in interfund borrowing?	Yes No

Item C.21. Swing pricing.

For open-end management investment companies, respond to the following:

a. Did the Fund (if not a Money Market Fund, Exchange-Traded Fund, or Exchange-Traded Managed Fund) engage in swing pricing?	Yes No

Management Investment Record: 14

Item C.1. Background information.

a. Full Name of the Fund	iShares Core U.S. Aggregate Bond ETF
b. Series identication number, if any	S000004362
c. LEI	549300F7VSXTKBGHJE47
d. Is this the first filing on this form by the Fund?	Yes No

Item C.2. Classes of open-end management investment companies.

a. How many Classes of shares of the Fund (if any) are authorized?	0
b. How many new Classes of shares of the Fund were added during the reporting period?	0
c. How many Classes of shares of the Fund were terminated during the reporting period?	0
d. For each Class with shares outstanding, provide the information requested below:
Shares Outstanding Record: 1
i. Full name of Class	iShares Core U.S. Aggregate Bond ETF
ii. Class identification number, if any	C000012092
iii. Ticker symbol, if any	AGG

Item C.3. Type of fund.

Instructions. 1. "Fund of Funds" means a fund that acquires securities issued by any other investment company in excess of the amounts permitted under paragraph (A) of section 12(d)(1) of the Act (15 U.S.C. 80a-12(d)(1)(A)), but, for purposes of this Item, does not include a fund that acquires securities issued by another company solely in reliance on rule 12d1-1 under the Act (CFR 270.12d1-1). 2. "Index Fund" means an investment company, including an Exchange-Traded Fund, that seeks to track the performance of a specified index. 3. "Interval Fund" means a closed-end management investment company that makes periodic repurchases of its shares pursuant to rule 23c-3 under the Act (17 CFR 270.23c-3). 4. "Master-Feeder Fund" means a two-tiered arrangement in which one or more funds (each a feeder fund) holds shares of a single Fund (the master fund) in accordance with section 12(d)(1)(E) of the Act (15 U.S.C. 80a-12(d)(1)(E)) or pursuant to exemptive relief granted by the Commission. 5. "Target Date Fund" means an investment company that has an investment objective or strategy of providing varying degrees of long-term appreciation and capital preservation through a mix of equity and fixed income exposures that changes over time based on an investor's age, target retirement date, or life expectancy.

Indicate if the Fund is any one of the types listed below. Check all that apply.

a. Exchange-Traded Fund or Exchange-Traded Managed Fund or offers a Class that itself is an Exchange-Traded Fund or Exchange-Traded Managed Fund        i.     Exchange-Traded Fund        ii.    Exchange-Traded Managed Fund   b.   Index Fund  i. Is the index whose performance the Fund tracks, constructed: 1. By an affiliated person of the fund? Yes No 2. Exclusively for the fund? Yes No ii. Provide the annualized difference between the Fund's total return during the reporting period and the index's return during the reporting period (i.e., the Fund's total return less the index's return): 1. Before Fund fees and expenses: -0.01000000  2. After Fund fees and expenses (i.e., net asset value): -0.04000000  iii. Provide the annualized standard deviation of the daily difference between the Fund's total return and the index's return during the reporting period: 1. Before Fund fees and expenses: 0.83000000  2. After Fund fees and expenses (i.e., net asset value): 0.83000000   c.    Seeks to achieve performance results that are a multiple of a benchmark, the inverse of a benchmark, or a multiple of the inverse of a benchmark   d.    Interval Fund   e.    Fund of Funds   f.     Master-Feeder Fund  i. If the Registrant is a master fund, then provide the information requested below with respect to each feeder fund: Feeder funds Record: 1 1. Full name iShares U.S. Aggregate Bond Index ETF (CAD-Hedged)  2. For registered feeder funds: A. Investment Company Act file number (e.g., 811-) N/A  B. Series identification number, if any N/A  C. LEI of feeder fund N/A  3. For unregistered feeder funds: A. SEC file number of the feeder fund's investment adviser (e.g., 801-) N/A  B. LEI of feeder fund, if any 549300NRTXUZAUPJ8B89  Feeder funds Record: 2 1. Full name iShares U.S. Aggregate Bond Index ETF  2. For registered feeder funds: A. Investment Company Act file number (e.g., 811-) N/A  B. Series identification number, if any N/A  C. LEI of feeder fund N/A  3. For unregistered feeder funds: A. SEC file number of the feeder fund's investment adviser (e.g., 801-) N/A  B. LEI of feeder fund, if any 549300YFEJT0WK25HR81  ii. If the Registrant is a feeder fund, then provide the information requested below with respect to a master fund registered under the Act:

 g.    Money Market Fund 
 h.    Target Date Fund 
 i.     Underlying fund to a variable annuity or variable life insurance contract 
        N/A 

Item C.4. Diversification.

Does the Fund seek to operate as a “non-diversified company” as such term is defined in section 5(b)(2) of the Act (15 U.S.C. 80a- 5(b) (2))?

Yes No

Item C.5. Investments in certain foreign corporations.

Instruction. "Controlled foreign corporation" has the meaning provided in section 957 of the Internal Revenue Code [26 U.S.C. 957].

a. Does the fund invest in a controlled foreign corporation for the purpose of investing in certain types of instruments such as, but not limited to, commodities?

Yes No

Item C.6. Securities lending.

Instruction. For purposes of this Item, other adverse impacts would include, for example, (1) a loss to the Fund if collateral and indemnification were not sufficient to replace the loaned securities or their value, (2) the Fund's ineligibility to vote shares in a proxy, or (3) the Fund's ineligibility to receive a direct distribution from the issuer.

a. Is the Fund authorized to engage in securities lending transactions?	Yes No
b. Did the Fund lend any of its securities during the reporting period?	Yes No

i. If yes, during the reporting period, did any borrower fail to return the loaned securities by the contractual deadline with the result that:

1. The Fund (or its securities lending agent) liquidated collateral pledged to secure the loaned securities?	Yes No
2. The Fund was otherwise adversely impacted?	Yes No

c. Provide the information requested below about each securities lending agent, if any, retained by the Fund:

Securities Lending Record: 1
i. Full name of securities lending agent	BlackRock Institutional Trust Company, National Association
ii. LEI, if any	549300RK1FB0VMTPD087
iii. Is the securities lending agent an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No
iv. Does the securities lending agent or any other entity indemnify the fund against borrower default on loans administered by this agent?	Yes No

v. If the entity providing the indemnification is not the securities lending agent, provide the following information:

Idemnity Providers Record: 1

1. Name of person providing indemnification	BlackRock, Inc.
2. LEI, if any, of person providing indemnification	549300LRIF3NWCU26A80

vi. Did the Fund exercise its indemnification rights during the reporting period?

Yes No

d. If a person providing cash collateral management services to the Fund in connection with the Fund's securities lending activities does not also serve as securities lending agent, provide the following information about each cash collateral manager:

Collateral Managers Record: 1
i. Full name of cash collateral manager:	BlackRock Fund Advisors
ii. LEI, if any:	549300YOOGP0Y1M95C20
iii. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of a securities lending agent retained by the Fund?	Yes No
iv. Is the cash collateral manager an affiliated person, or an affiliated person of an affiliated person, of the Fund?	Yes No

e. Types of payments made to one or more securities lending agents and cash collateral managers (check all that apply):	i. Revenue sharing split   ii. Non-revenue sharing split (other than administrative fee)    iii. Administrative fee   iv. Cash collateral reinvestment fee   v. Indemnification fee   vi. Other     N/A
If other, describe:	Rebates paid to borrowers
f. Provide the monthly average of the value of portfolio securities on loan during the reporting period	1,564,984,436.64000000
g. Provide the net income from securities lending activities

Item C.7. Reliance on certain rules.

Did the Fund rely on any of the following rules under the Act during the reporting period? (check all that apply)

a. Rule 10f-3 (17 CFR 270.10f-3)    b. Rule 12d1-1 (17 CFR 270.12d1-1)   c. Rule 15a-4 (17 CFR 270.15a-4)    d. Rule 17a-6 (17 CFR 270.17a-6)    e. Rule 17a-7 (17 CFR 270.17a-7)   f. Rule 17a-8 (17 CFR 270.17a-8)   g. Rule 17e-1 (17 CFR 270.17e-1)   h. Rule 22d-1 (17 CFR 270.22d-1)   i. Rule 23c-1 (17 CFR 270.23c-1)    j. Rule 32a-4 (17 CFR 270.32a-4)   N/A

Item C.8. Expense limitations.

Instruction. Provide information concerning any direct or indirect limitations, waivers or reductions, on the level of expenses incurred by the fund during the reporting period. A limitation, for example, may be applied indirectly (such as when an adviser agrees to accept a reduced fee pursuant to a voluntary fee waiver) or it may apply only for a temporary period such as for a new fund in its start-up phase.

a. Did the Fund have an expense limitation arrangement in place during the reporting period?	Yes No
b. Were any expenses of the Fund reduced or waived pursuant to an expense limitation arrangement during the reporting period?	Yes No
c. Are the fees waived subject to recoupment?	Yes No
d. Were any expenses previously waived recouped during the period?	Yes No

Item C.9. Investment advisers.

a. Provide the following information about each investment adviser (other than a sub-adviser) of the Fund:

Investment Advisers Record: 1
i. Full name	BlackRock Fund Advisors
ii. SEC file number ( e.g., 801- )	801-22609
iii.CRD number	000105247
iv. LEI, if any	549300YOOGP0Y1M95C20
v. State, if applicable	CALIFORNIA
vi. Foreign country, if applicable	UNITED STATES OF AMERICA
vii. Was the investment adviser hired during the reporting period?	Yes No

b. If an investment adviser (other than a sub- adviser) to the Fund was terminated during the reporting period, provide the following with respect to each investment adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

c. For each sub-adviser to the Fund, provide the information requested:

i. Full name
ii. SEC file number ( e.g., 801- ), if applicable
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Is the sub-adviser an affiliated person of the Fund's investment adviser(s)?	Yes No
viii. Was the sub-adviser hired during the reporting period?	Yes No

d. If a sub-adviser was terminated during the reporting period, provide the following with respect to such sub-adviser:

i. Full name
ii. SEC file number ( e.g., 801- )
iii. CRD number
iv. LEI, if any
v. State, if applicable
vi. Foreign country, if applicable
vii. Termination date

Item C.10. Transfer agents.

a. Provide the following information about each person providing transfer agency services to the Fund:

Transfer Agents Record: 1
i. Full name	State Street Bank and Trust Company
ii.SEC file number ( e.g., 84- or 85- )	85-05003
iii. LEI, if any	571474TGEMMWANRLN572
iv. State, if applicable	MASSACHUSETTS
v. Foreign country, if applicable	UNITED STATES OF AMERICA
vi. Is the transfer agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vii. Is the transfer agent a sub-transfer agent?	Yes No

b. Has a transfer agent been hired or terminated during the reporting period?

Yes No

Item C.11. Pricing services.

a. Provide the following information about each person that provided pricing services to the Fund during the reporting period:

Pricing Services Record: 1
i. Full name	Refinitiv US Holdings Inc.
ii. LEI, if any, or provide and describe other identifying number	549300NF240HXJO7N016
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 2
i. Full name	Bloomberg L.P.
ii. LEI, if any, or provide and describe other identifying number	549300B56MD0ZC402L06
Description of other identifying number
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 3
i. Full name	ICE Data Services, Inc.
ii. LEI, if any, or provide and describe other identifying number	13-3668779
Description of other identifying number	Tax ID
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No
Pricing Services Record: 4
i. Full name	IHS Markit Ltd.
ii. LEI, if any, or provide and describe other identifying number	549300HLPTRASHS0E726
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable	UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
v. Is the pricing service an affiliated person of the Fund or its investment adviser(s)?	Yes No

b. Was a pricing service hired or terminated during the reporting period?

Yes No

Item C.12. Custodians.

a. Provide the following information about each person that provided custodial services to the Fund during the reporting period:

Custodians Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any	571474TGEMMWANRLN572
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 2
i. Full name	J.P. Morgan Securities LLC
ii. LEI, if any	ZBUT11V806EZRVTWT807
iii. State, if applicable	NEW YORK
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other
Custodians Record: 3
i. Full name	Euroclear Bank
ii. LEI, if any	549300OZ46BRLZ8Y6F65
iii. State, if applicable
iv. Foreign country, if applicable	BELGIUM
v. Is the custodian an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the custodian a sub-custodian?	Yes No
vii. With respect to the custodian, check below to indicate the type of custody:	1.Bank - section 17(f)(1) (15 U.S.C. 80a-17(f)(1)) 2.Member national securities exchange - rule 17f-1 (17 CFR 270.17f-1) 3.Self - rule 17f-2 (17 CFR 270.17f-2) 4.Securities depository - rule 17f-4 (17 CFR 270.17f-4) 5.Foreign custodian - rule 17f-5 (17 CFR 270.17f-5) 6.Futures commission merchants and commodity clearing organizations - rule 17f-6 (17 CFR 270.17f-6) 7.Foreign securities depository - rule 17f-7 (17 CFR 270.17f-7) 8.Insurance company sponsor - rule 26a-2 (17 CFR 270.26a-2) 9.Other

b. Has a custodian been hired or terminated during the reporting period?*

Yes No

Item C.13. Shareholder servicing agents.

a. Provide the following information about each shareholder servicing agent of the Fund:

i. Full name
ii. LEI, if any, or provide and describe other identifying number
Description of other identifying number
iii. State, if applicable
iv. Foreign country, if applicable
v. Is the shareholder servicing agent an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the shareholder servicing agent a sub-shareholder servicing agent?	Yes No

b. Has a shareholder servicing agent been hired or terminated during the reporting period?

Yes No

Item C.14. Administrators.

a. Provide the following information about each administrator of the Fund:

Administrators Record: 1
i. Full name	State Street Bank and Trust Company
ii. LEI, if any, or other identifying number	571474TGEMMWANRLN572
Description of other identifying number
iii. State, if applicable	MASSACHUSETTS
iv. Foreign country, if applicable	UNITED STATES OF AMERICA
v. Is the administrator an affiliated person of the Fund or its investment adviser(s)?	Yes No
vi. Is the administrato