Costar GroupCSGP
13F holders, Q1 2026 (March 31)797holders −50
115new positions
162sold out
9famous investors
$40.37avg. 13F price*
At the end of Q1 2026, 797 institutions reported holding Costar Group Inc. (CSGP) in their 13F filings, down 50 from Q4 2025. 115 opened new positions and 162 sold out. The largest holders were Vanguard Portfolio Management LLC ($1.5B), BlackRock, Inc. ($1.4B) and Vanguard Capital Management LLC ($1.1B). 9 famous investors held it, including Chuck Akre (6.8% of Akre Capital Management's portfolio), Ron Baron (2.0% of Baron Capital (BAMCO)'s portfolio) and Chase Coleman (0.3% of Tiger Global Management's portfolio).
- Company
- Costar Group Inc.
- Sector
- Finance
- CUSIP
- 22160N109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 115 | $455.9M |
| Exits | 162 | $1.5B |
All 13F filers, Q4 2025 → Q1 2026: 63,429,049 shares bought and 59,936,729 shares sold, net +3,492,320 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 797 holders
| Vanguard Portfolio Management LLC | 0.08% | — | 38,234,133 | $1.5B |
| BlackRock, Inc. | 0.02% | Reduce -0.5% | 33,808,184 | $1.4B |
| Vanguard Capital Management LLC | 0.03% | — | 27,423,903 | $1.1B |
| State Street Corp. | 0.03% | Add +0.1% | 18,650,975 | $752.4M |
| Principal Financial Group Inc. | 0.38% | Add +0.7% | 17,696,192 | $713.9M |
| Baron Capital (BAMCO) | 1.99% | Reduce -16.3% | 16,314,175 | $658.1M |
| Invesco Ltd. | 0.06% | Add +7.0% | 15,947,525 | $643.3M |
| Capital International Investors | 0.15% | Add +43.1% | 15,513,753 | $625.8M |
| Baillie Gifford & Co. | 0.56% | Add +5.2% | 13,610,922 | $549.1M |
| Polen Capital Management LLC | 3.51% | Add +157.0% | 12,570,368 | $507.1M |
| Geode Capital Management, LLC | 0.03% | Add +2.2% | 12,448,652 | $500.4M |
| Akre Capital Management | 6.83% | Add +7.6% | 10,348,273 | $417.4M |
| Goldman Sachs Group Inc. | 0.05% | Add +146.4% | 9,245,812 | $373.0M |
| Janus Henderson Group PLC | 0.15% | Add +3.4% | 7,724,152 | $311.6M |
| D. E. Shaw & Co. | 0.20% | Add +552.6% | 5,909,623 | $238.4M |
| Morgan Stanley | 0.01% | Add +2.3% | 5,412,615 | $218.3M |
| Capital Research Global Investors | 0.03% | Reduce -21.4% | 4,373,706 | $176.4M |
| Bank of America Corp. | 0.01% | Add +1.8% | 3,568,107 | $143.9M |
| Van Eck Associates Corp. | 0.11% | Add +6054.4% | 3,478,726 | $140.3M |
| Northern Trust Corp. | 0.02% | Reduce -1.0% | 3,432,231 | $138.5M |
| Meritage Group LP | 5.07% | New | 3,329,006 | $134.3M |
| Amundi | 0.04% | Reduce -20.3% | 3,280,724 | $132.3M |
| Legal & General Group Plc | 0.03% | Add +5.7% | 3,025,508 | $122.0M |
| Beck Mack & Oliver LLC | 2.44% | Add +31.6% | 2,926,975 | $118.1M |
| Charles Schwab Investment Management Inc. | 0.02% | Add +7.9% | 2,874,262 | $115.9M |
| FMR LLC | 0.01% | Add +135.5% | 2,831,524 | $114.2M |
| Ensign Peak Advisors, Inc | 0.21% | Add +372.8% | 2,734,289 | $110.3M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.13% | Reduce -4.9% | 2,675,501 | $107.9M |
| Bank of Montreal | 0.04% | Add +448.0% | 2,487,715 | $100.4M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.02% | Reduce -0.3% | 2,425,693 | $97.9M |
| Dimensional Fund Advisors LP | 0.02% | Add +3.5% | 2,401,852 | $96.9M |
| Bank of New York Mellon Corp | 0.02% | Reduce -41.6% | 2,400,680 | $96.8M |
| Vanguard Fiduciary Trust Co. | 0.02% | — | 2,391,061 | $96.5M |
| Nomura Asset Management International Inc. | 0.16% | Reduce -40.3% | 2,333,765 | $94.1M |
| Canada Pension Plan Investment Board | 0.05% | Add +171.2% | 2,010,963 | $81.1M |
| Nuveen, LLC | 0.02% | Reduce -45.8% | 1,930,808 | $77.9M |
| Deutsche Bank AG | 0.03% | Add +7.0% | 1,899,502 | $76.6M |
| JPMorgan Chase & Co. | 0.01% | Add +139.6% | 1,849,545 | $75.6M |
| Envestnet Asset Management Inc. | 0.02% | Add +34.9% | 1,802,537 | $72.7M |
| Mackenzie Financial Corp. | 0.08% | Reduce -1.3% | 1,638,673 | $66.1M |
| DF Dent & Co. Inc. | 1.24% | Reduce -20.1% | 1,605,157 | $64.8M |
| T. Rowe Price Associates Inc. | 0.01% | Add +26.6% | 1,517,795 | $61.2M |
| Tremblant Capital Group | 1.96% | Reduce -7.9% | 1,506,031 | $60.8M |
| Tiger Global Management | 0.26% | Reduce -33.6% | 1,500,000 | $60.5M |
| Royal Bank of Canada | 0.01% | Add +9.8% | 1,435,734 | $57.9M |
| Wells Fargo & Company | 0.01% | Add +59.2% | 1,402,376 | $56.6M |
| Greenhouse Funds LLLP | 2.63% | New | 1,377,305 | $55.6M |
| Pictet Asset Management Holding SA | 0.06% | Add +30.0% | 1,372,159 | $55.4M |
| Capitolis Liquid Global Markets LLC | 0.35% | — | 1,355,000 | $54.7M |
| HSBC Holdings PLC | 0.03% | Add +36.4% | 1,346,906 | $54.4M |
| Voloridge Investment Management, LLC | 0.21% | New | 1,329,958 | $53.7M |
| UBS Group AG | 0.01% | Reduce -37.2% | 1,326,028 | $53.5M |
| Federated Hermes, Inc. | 0.09% | Reduce -1.9% | 1,297,958 | $52.4M |
| AQR Capital Management | 0.02% | Add +241.9% | 1,262,704 | $50.9M |
| Swiss National Bank | 0.03% | Add +7.1% | 1,243,765 | $50.2M |
| Barclays PLC | 0.02% | Reduce -46.9% | 1,232,021 | $49.7M |
| Riverbridge Partners LLC | 1.21% | Reduce -15.5% | 1,227,391 | $49.5M |
| Spyglass Capital Management LLC | 3.17% | Reduce -29.6% | 1,111,224 | $44.8M |
| Citadel Advisors | 0.03% | Add +80.0% | 1,088,204 | $43.9M |
| Jane Street Group, LLC | 0.05% | Add +358.1% | 1,087,447 | $43.9M |
| Chicago Capital, LLC | 1.15% | Add +27.6% | 1,055,620 | $42.6M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.03% | Reduce -0.5% | 1,051,841 | $42.4M |
| Massachusetts Financial Services Co. | 0.01% | Reduce -69.7% | 956,096 | $39.2M |
| Sumitomo Mitsui Trust Group, Inc. | 0.02% | Reduce -4.6% | 954,074 | $38.5M |
| Citigroup Inc. | 0.02% | Reduce -36.5% | 953,620 | $38.5M |
| Vanguard Global Advisers, LLC | 0.02% | — | 928,271 | $37.4M |
| Focus Partners Wealth | 0.04% | Add +9.6% | 922,118 | $37.2M |
| Blair William & Co. | 0.10% | Reduce -55.5% | 900,313 | $36.3M |
| Stephens Investment Management Group LLC | 0.48% | Reduce -21.8% | 872,463 | $35.2M |
| Corvex Management LP | 1.37% | New | 851,734 | $34.4M |
| First Trust Advisors LP | 0.02% | Add +19.3% | 839,044 | $33.8M |
| American Capital Management Inc. | 1.79% | Reduce -0.0% | 825,296 | $33.3M |
| Douglas Lane & Associates, LLC | 0.47% | Add +17.7% | 803,839 | $32.4M |
| Primecap Management Co. | 0.03% | Add +432.2% | 803,600 | $32.4M |
| TimesSquare Capital Management, LLC | 0.54% | Reduce -1.7% | 795,580 | $32.1M |
| Rhumbline Advisers | 0.03% | Add +3.1% | 792,763 | $32.0M |
| Squarepoint Ops LLC | 0.07% | Reduce -1.6% | 782,607 | $31.6M |
| BNP Paribas Financial Markets | 0.02% | Reduce -23.0% | 768,716 | $31.0M |
| Petrus Trust Company, LTA | 3.33% | Add +20.2% | 756,200 | $30.5M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.02% | — | 717,670 | $29.0M |
| NZS Capital, LLC | 0.95% | Add +60.7% | 709,426 | $28.6M |
| National Pension Service | 0.02% | Add +3.0% | 702,678 | $28.3M |
| Peregrine Capital Management LLC | 1.05% | Reduce -6.6% | 699,152 | $28.2M |
| Ameriprise Financial Inc. | 0.01% | Add +11.8% | 687,776 | $27.7M |
| Alliancebernstein L.P. | 0.01% | Reduce -3.5% | 407,508 | $27.4M |
| California State Teachers Retirement System | 0.03% | Reduce -2.3% | 667,111 | $26.9M |
| Ardmore Road Asset Management LP | 1.77% | New | 666,900 | $26.9M |
| Raymond James Financial Inc. | 0.01% | Add +23.4% | 628,583 | $25.4M |
| Thompson Siegel & Walmsley LLC | 0.44% | New | 615,251 | $24.8M |
| ProShare Advisors LLC | 0.04% | Reduce -18.9% | 611,283 | $24.7M |
| Walleye Capital LLC | 0.14% | Add +1553.6% | 536,787 | $21.7M |
| California Public Employees Retirement System | 0.01% | Reduce -27.2% | 532,683 | $21.5M |
| Marshall Wace, LLP | 0.02% | Add +32.2% | 517,260 | $20.9M |
| Weitz Investment Management, Inc. | 1.46% | Reduce -28.2% | 517,025 | $20.9M |
| Prana Capital Management, LP | 0.64% | Add +62.6% | 515,387 | $20.8M |
| CIBC Bancorp USA Inc. | 0.03% | — | 500,113 | $20.2M |
| Weiss Asset Management LP | 0.52% | Add +1349.6% | 497,500 | $20.1M |
| Rush Island Management, LP | 1.31% | New | 483,200 | $19.5M |
| Fiera Capital Corp | 0.07% | Add +37.3% | 481,711 | $19.4M |
| Erste Asset Management GmbH | 0.17% | Add +40.6% | 450,000 | $18.4M |
"% of holder's portfolio" is CSGP's weight in each manager's 13F, not the share of Costar Group Inc. the manager owns.