CSGP CoStar Group, Inc.
CoStar Group, Inc. (CSGP) Institutional Ownership
What the institutions did with CSGP last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | 37.9M | 9.2% |
| BlackRock, Inc. | 33.8M | 8.2% |
| VANGUARD CAPITAL MANAGEMENT LLC | 26.7M | 6.4% |
| BAMCO INC /NY/ | 21.6M | 5.2% |
| STATE STREET CORP | 18.4M | 4.4% |
| Capital International Investors | 16.6M | 4.0% |
| BAILLIE GIFFORD & CO | 13.2M | 3.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 12.2M | 2.9% |
| AKRE CAPITAL MANAGEMENT LLC | 11.7M | 2.8% |
| POLEN CAPITAL MANAGEMENT LLC | 8.8M | 2.1% |
| AQR CAPITAL MANAGEMENT LLC | 8.4M | 2.0% |
| Jupiter Topco LLC | 7.8M | 1.9% |
| Invesco Ltd. | 6.8M | 1.6% |
| EdgePoint Investment Group Inc. | 6.0M | 1.4% |
| NORGES BANK | 5.9M | 1.4% |
| MORGAN STANLEY | 5.5M | 1.3% |
| Meritage Group LP | 5.4M | 1.3% |
| GOLDMAN SACHS GROUP INC | 5.1M | 1.2% |
| JPMORGAN CHASE & CO | 4.9M | 1.2% |
| FEDERATED HERMES, INC. | 4.4M | 1.1% |
| Capital Research Global Investors | 4.2M | 1.0% |
| PRINCIPAL FINANCIAL GROUP INC | 3.8M | 0.9% |
| NORTHERN TRUST CORP | 3.4M | 0.8% |
| Qube Research & Technologies Ltd | 3.2M | 0.8% |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 3.1M | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| PRINCIPAL FINANCIAL GROUP INC | Reduced | 17.7M | 3.8M | -13.9M |
| Invesco Ltd. | Reduced | 15.9M | 6.8M | -9.1M |
| AQR CAPITAL MANAGEMENT LLC | Increased | 1.3M | 8.4M | +7.2M |
| EdgePoint Investment Group Inc. | New | 0 | 6.0M | +6.0M |
| BAMCO INC /NY/ | Increased | 16.3M | 21.6M | +5.3M |
| D. E. Shaw & Co., Inc. | Reduced | 5.9M | 1.0M | -4.9M |
| GOLDMAN SACHS GROUP INC | Reduced | 9.2M | 5.1M | -4.1M |
| POLEN CAPITAL MANAGEMENT LLC | Reduced | 12.6M | 8.8M | -3.8M |
| Qube Research & Technologies Ltd | New | 0 | 3.2M | +3.2M |
| FEDERATED HERMES, INC. | Increased | 1.3M | 4.4M | +3.1M |
| JPMORGAN CHASE & CO | Increased | 1.8M | 4.9M | +3.1M |
| Meritage Group LP | Increased | 3.3M | 5.4M | +2.1M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Increased | 956.1K | 3.0M | +2.0M |
| Spyglass Capital Management LLC | Increased | 1.1M | 2.7M | +1.6M |
| TIGER GLOBAL MANAGEMENT LLC | Sold Out | 1.5M | 0 | -1.5M |
| MACKENZIE FINANCIAL CORP | Reduced | 1.6M | 155.1K | -1.5M |
| Greenhouse Funds LLLP | Sold Out | 1.4M | 0 | -1.4M |
| CAPITOLIS LIQUID GLOBAL MARKETS LLC | Sold Out | 1.4M | 0 | -1.4M |
| AKRE CAPITAL MANAGEMENT LLC | Increased | 10.3M | 11.7M | +1.4M |
| Legal & General Group Plc | Reduced | 3.0M | 1.7M | -1.3M |
| TREMBLANT CAPITAL GROUP | Reduced | 1.5M | 228.5K | -1.3M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 40.9K | 1.3M | +1.3M |
| Erste Asset Management GmbH | Increased | 450.0K | 1.7M | +1.3M |
| Capital International Investors | Increased | 15.5M | 16.6M | +1.1M |
| THOMPSON SIEGEL & WALMSLEY LLC | Increased | 615.3K | 1.7M | +1.1M |
| Fiera Capital Corp | Increased | 481.7K | 1.6M | +1.1M |
| JANE STREET GROUP, LLC | Increased | 1.1M | 2.2M | +1.1M |
| Connor, Clark & Lunn Investment Management Ltd. | Increased | 107.7K | 1.2M | +1.1M |
| UBS Group AG | Increased | 1.3M | 2.3M | +1.0M |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 2.4M | 1.5M | -886.5K |
| Stephens Investment Management Group LLC | Sold Out | 872.5K | 0 | -872.5K |
| MARSHALL WACE, LLP | Increased | 517.3K | 1.4M | +863.9K |
| CAPITAL FUND MANAGEMENT S.A. | Increased | 46.4K | 902.7K | +856.4K |
| Man Group plc | Increased | 64.7K | 921.1K | +856.4K |
| Corvex Management LP | Sold Out | 851.7K | 0 | -851.7K |
| BECK MACK & OLIVER LLC | Reduced | 2.9M | 2.1M | -842.7K |
| BANK OF AMERICA CORP /DE/ | Reduced | 3.6M | 2.7M | -833.0K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 1.5M | 686.0K | -831.8K |
| FIRST TRUST ADVISORS LP | Reduced | 839.0K | 26.3K | -812.8K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 768.7K | 1.6M | +809.6K |
| TWO SIGMA INVESTMENTS, LP | Increased | 303.0K | 1.1M | +801.9K |
| TimesSquare Capital Management, LLC | Sold Out | 795.6K | 0 | -795.6K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 27.4M | 26.7M | -740.1K |
| Trexquant Investment LP | Increased | 73.1K | 740.2K | +667.2K |
| National Pension Service | Reduced | 702.7K | 42.2K | -660.4K |
| Squarepoint Ops LLC | Increased | 782.6K | 1.4M | +659.4K |
| MILLENNIUM MANAGEMENT LLC | Increased | 123.6K | 747.0K | +623.4K |
| Nuveen, LLC | Reduced | 1.9M | 1.3M | -605.2K |
| ProShare Advisors LLC | Reduced | 611.3K | 77.8K | -533.5K |
| Chicago Capital, LLC | Reduced | 1.1M | 527.0K | -528.7K |
| Korea Investment CORP | Increased | 183.9K | 698.4K | +514.5K |
| AMERIPRISE FINANCIAL INC | Reduced | 687.8K | 185.8K | -502.0K |
| Weiss Asset Management LP | Sold Out | 497.5K | 0 | -497.5K |
| United Asset Strategies, Inc. | New | 0 | 489.0K | +489.0K |
| RUSH ISLAND MANAGEMENT, LP | Sold Out | 483.2K | 0 | -483.2K |
| BARCLAYS PLC | Reduced | 1.2M | 758.6K | -473.4K |
| CANADA PENSION PLAN INVESTMENT BOARD | Increased | 2.0M | 2.5M | +470.7K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Increased | 2.7M | 3.1M | +461.2K |
| BAILLIE GIFFORD & CO | Reduced | 13.6M | 13.2M | -456.8K |
| TUDOR INVESTMENT CORP ET AL | Increased | 179.3K | 627.5K | +448.2K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.