Equal-WT
WhaleScore 2.0
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Primecap Management Company is based out of Pasadena. Primecap Management Company is a large advisory firm with 17 clients and discretionary assets under management (AUM) of $135,873,993,240 (Form ADV from 2025-04-08). Their last reported 13F filing for Q1 2025 included $120,960,512,182 in managed 13F securities
and a top 10 holdings concentration of 33.79%. Primecap Management Company's largest holding is Lilly(Eli) & Co with shares held of 14,779,770. Whalewisdom has at least 100 13F filings, and 1664 13G filings
Business Description
PRIMECAP's goal is to provide superior long-term investment results and to satisfy the specific requirements and objectives of its clients. PRIMECAP was founded with efficiency in mind to minimize administrative burdens and bureaucracy associated with investment management, not administration.
PRIMECAP views itself as stock pickers, not marketers. To this end, the Firm has limited the number of clients it services, enabling it to focus on portfolio management rather than marketing and administration.
Owners
- KOLOKOTRONES, THEOFANIS, A - CHAIRMAN EMERITUS
- WARNICK, WILLIAM, TODD - CHIEF FINANCIAL OFFICER
- MOLINELLI, GREGORY, TODD - EXECUTIVE VICE PRESIDENT
- BUCHER, JOHN, RAYMOND - CHIEF OPERATING OFFICER
- FRIED, JOEL, PAUL - CHAIRMAN
- OTTOSEN, JENNIFER, ANN - CHIEF COMPLIANCE OFFICER
- MORDECAI, ALFRED, WINBORNE - PRESIDENT
- ANSARI, MOHAMMED, MOHSIN - VICE CHAIRMAN
- MARCHETTI, JAMES, K - EXECUTIVE VICE PRESIDENT Click on the Ownership/Private Fund Data tab for more details.
Known Email Addresses
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Other Contact Information
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2025-03-31
Top Buys (13F)
Name | % Change |
---|---|
SCHW Charles Schwab Corp | 0.66% |
FLUT Flutter Entertainmen | 0.17% |
GSK GSK Plc | 0.16% |
BMY Bristol-Myers Squibb | 0.16% |
MDB MongoDB Inc | 0.11% |

2025-03-31
Top Sells (13F)
Name | % Change |
---|---|
TSLA Tesla Inc | 0.85% |
UAL United Airlines Hold | 0.46% |
GOOGL Alphabet Inc. Class | 0.4% |
NVDA NVIDIA Corp | 0.37% |
ORCL Oracle Corp | 0.32% |

2025-03-31
13F Holdings Summary
Name | $ Change |
---|---|
LLY Lilly(Eli) & Co | 10.09% |
AMGN Amgen, Inc | 3.19% |
BSX Boston Scientific Co | 3.04% |
MSFT Microsoft Corporatio | 2.82% |
KLAC KLA Corp | 2.74% |

2025-03-31
13F Activity
Market Value | $121b, Prior: $129b |
Inflows (Outflows) as % of Total MV | (-3.599)% |
New Purchases | 12 stocks |
Added To | 65 stocks |
Sold out of | 6 stocks |
Reduced holdings in | 233 stocks |
Top 10 Holdings % | 33.79% |
Turnover %[1] | 5.28% |
Turnover Alt %[2] | 1.67% |
Time Held Top 20 | 39.25 quarters |
Time Held Top 10 | 23.5 quarters |
Time Held All | 35.55 quarters |
[1]: Turnover is calculated by taking the # of new holdings (initial purchases) + the # of positions sold out of (not just reduced) divided by the total # of holdings for the quarter.
[2]: Alt Turnover is calculated by taking either the total MV of new purchases or the MV of securities sold, whichever is less, divided by the total MV of the fund.

2025-03-31
13F Sector Allocation Over Time
limited to past 4 quarters. Subscribe to see all available data

2025-03-31
Analysis

Top 20 equal-weighted holdings. Performance numbers calculated through 2025-03-31