RS INVESTMENT MANAGEMENT CO LLC

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Contact Information RS INVESTMENT MANAGEMENT CO LLC
388 MARKET STREET
SAN FRANCISCO CA 94111
Business Phone: 4155912700

13F Investments by Sector - 12/31/2011

13F Activity for 12/31/2011

^[1]Market Value:

$10,465,423

New Purchases:

49 stocks

Additional Purchases:

129 stocks

Sold out of:

44 stocks

Reduced holdings in:

92 stocks

^[1] - Market Value shown here may differ from what was reported on the actual 13F filing. The market value shown here includes only those securities that the Whalewisdom parsing engine successfully extracted. Value may also be rounded. Please refer to the actual 13F filing for verification.

Top 13F Holdings on 12/31/2011

Stock	% of Portfolio
Calpine Corp.	3.72%
Denbury Resources Inc.	3.4%
MARTIN MARIETTA MTRL	3.38%
Southwestern Energy Co.	3.08%
Compass Minerals International Inc.	2.83%

View All Holdings

Recent SEC Filings

Schedule 13D/G Summary There have been 25 Schedule 13D/G filing(s) received since 12/31/2011

Recent News

13F Holdings Comparison

Shares Calls Puts Principal Stock ticker:

*Shares are split adjusted
**CALLS, PUT, and PRN Market Values shown are taken straight from the 13F Filing and may be rounded to the nearest $1,000 (X $1,000). View the actual 13F Filing to confirm.

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13F Filings Available:

2011-12-31 - 13F-HR (Subscription required)
2011-09-30 - 13F-HR/A (Subscription required)
2011-09-30 - 13F-HR (Subscription required)
2011-06-30 - 13F-HR (Subscription required)
2011-03-31 - 13F-HR (Subscription required)
2010-12-31 - 13F-HR (Subscription required)
2010-09-30 - 13F-HR (Subscription required)
2010-06-30 - 13F-HR (Subscription required)
2010-03-31 - 13F-HR (Subscription required)
2009-12-31 - 13F-HR (Subscription required)
2009-09-30 - 13F-HR (Subscription required)
2009-06-30 - 13F-HR (Subscription required)
2009-03-31 - 13F-HR (Subscription required)
2008-12-31 - 13F-HR (Subscription required)
2008-09-30 - 13F-HR (Subscription required)
2008-06-30 - 13F-HR (Subscription required)
2008-03-31 - 13F-HR (Subscription required)
2007-12-31 - 13F-HR (Subscription required)
2007-09-30 - 13F-HR (Subscription required)
2007-06-30 - 13F-HR (Subscription required)
2007-03-31 - 13F-HR (Subscription required)
2006-12-31 - 13F-HR (Subscription required)
2006-09-30 - 13F-HR (Subscription required)

	Subject Company	Symbol	Date of Filing	Total Reported Shares Owned	Shares Reported on 13F	Change
SC 13G/A	EHEALTH, INC.	EHTH	02/09/2012	3,048,436	3,048,436	Decreased position by 0
SC 13G/A	Taseko Mines Ltd.	TGB	02/09/2012	28,976,561	28,976,561	Decreased position by 0
SC 13G/A	Acxiom Corporation	ACXM	02/09/2012	9,036,261	9,036,261	Decreased position by 0
SC 13G/A	Compass Minerals International Inc.	CMP	02/09/2012	4,286,592	4,285,638	Increased position by 954
SC 13G/A	Myriad Genetics Inc.	MYGN	02/09/2012	5,266,198	5,266,198	Decreased position by 0
SC 13G/A	Associated Banc-Corp	ASBC	02/09/2012	10,865,285	10,823,760	Increased position by 41,525
SC 13G	Commercial Vehicle Group Inc.	CVGI	02/09/2012	2,000,770	2,000,770	Decreased position by 0
SC 13G	SEMILEDS CORP	LEDS	02/09/2012	2,025,690	2,025,690	Decreased position by 0
SC 13G/A	GameStop Corp.	GME	02/09/2012	10,690,425	10,645,010	Increased position by 45,415
SC 13G	AOL, Inc.	AOL	02/09/2012	7,950,590	7,950,590	Decreased position by 0
SC 13G	PICO Holdings Inc.	PICO	02/09/2012	1,884,332	1,884,332	Decreased position by 0
SC 13G/A	Euronet Worldwide Inc.	EEFT	02/09/2012	4,520,397	4,520,397	Decreased position by 0
SC 13G/A	First Horizon National Corp.	FHN	02/09/2012	24,452,630	24,349,892	Increased position by 102,738
SC 13G/A	MARTIN MARIETTA MTRL	MLM	02/09/2012	4,693,791	4,679,648	Increased position by 14,143
SC 13G/A	Integrated Device Technology, Inc.	IDTI	02/09/2012	14,627,067	14,627,067	Decreased position by 0
SC 13G	Redwood Trust Inc.	RWT	02/09/2012	3,954,803	3,954,803	Decreased position by 0
SC 13G	INPHI CORPORATION COMMON STOCK $0.001 PAR VALUE	IPHI	02/09/2012	1,448,118	1,448,118	Decreased position by 0
SC 13G	Denbury Resources Inc.	DNR	02/09/2012	23,558,139	23,487,592	Increased position by 70,547
SC 13G	StanCorp Financial Group Inc.	SFG	02/09/2012	2,688,944	2,688,944	Decreased position by 0
SC 13G/A	ACI Worldwide, Inc.	ACIW	02/09/2012	971	0	New Position
SC 13G/A	Susquehanna Bancshares, Inc.	SUSQ	02/09/2012	524,207	524,207	Decreased position by 0
SC 13G/A	Atmel Corporation	ATML	02/09/2012	20,462,674	20,370,742	Increased position by 91,932
SC 13G/A	New Gold, Inc.	NGD	02/09/2012	21,627,136	21,627,136	Decreased position by 0
SC 13G/A	Whitney Holding Corp.	WTNY	02/09/2012	0	0
SC 13G/A	Key Energy Services Inc.	KEG	02/09/2012	0	0

RS INVESTMENT MANAGEMENT CO LLC

Schedule 13D and 13G filings submitted since 12/31/2011