Costar GroupCSGP
13F holders, Q3 2025 (September 30)905holders +32
99new positions
62sold out
10famous investors
$84.30avg. 13F price*
At the end of Q3 2025, 905 institutions reported holding Costar Group Inc. (CSGP) in their 13F filings, up 32 from Q2 2025. 99 opened new positions and 62 sold out. The largest holders were Vanguard Group Inc. ($5.9B), BlackRock, Inc. ($3.0B) and Baron Capital (BAMCO) ($1.6B). 10 famous investors held it, including Chuck Akre (7.8% of Akre Capital Management's portfolio), Ron Baron (4.3% of Baron Capital (BAMCO)'s portfolio) and Dan Loeb (3.1% of Third Point's portfolio).
- Company
- Costar Group Inc.
- Sector
- Finance
- CUSIP
- 22160N109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 99 | $138.5M |
| Exits | 62 | $149.6M |
All 13F filers, Q2 2025 → Q3 2025: 22,285,709 shares bought and 28,687,995 shares sold, net −6,402,286 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 905 holders
| Vanguard Group Inc. | 0.09% | Add +1.8% | 70,056,441 | $5.9B |
| BlackRock, Inc. | 0.05% | Add +3.1% | 36,133,158 | $3.0B |
| Baron Capital (BAMCO) | 4.31% | Reduce -2.2% | 19,255,566 | $1.6B |
| Principal Financial Group Inc. | 0.79% | Reduce -0.1% | 18,623,370 | $1.6B |
| State Street Corp. | 0.05% | Add +3.1% | 18,284,128 | $1.5B |
| Geode Capital Management, LLC | 0.07% | Add +2.0% | 12,601,455 | $1.1B |
| Akre Capital Management | 7.83% | Reduce -0.0% | 9,306,485 | $785.2M |
| Morgan Stanley | 0.04% | Add +15.3% | 8,543,024 | $720.8M |
| Baillie Gifford & Co. | 0.52% | Reduce -3.5% | 8,241,642 | $695.3M |
| Massachusetts Financial Services Co. | 0.19% | Add +12.5% | 7,406,788 | $624.9M |
| Capital International Investors | 0.09% | Reduce -54.2% | 6,788,554 | $572.7M |
| Polen Capital Management LLC | 1.75% | Reduce -7.8% | 6,380,909 | $538.4M |
| Janus Henderson Group PLC | 0.24% | Add +54.0% | 6,216,807 | $524.5M |
| Mizuho Markets Americas LLC | 9.11% | Reduce -12.5% | 5,123,216 | $432.2M |
| Capital Research Global Investors | 0.08% | Add +27.0% | 4,993,854 | $421.3M |
| UBS Group AG | 0.08% | Reduce -2.1% | 4,607,937 | $388.8M |
| Invesco Ltd. | 0.06% | Add +2.2% | 4,537,343 | $382.8M |
| Bank of New York Mellon Corp | 0.07% | Reduce -9.9% | 4,363,371 | $368.1M |
| Macquarie Group Ltd. | 0.42% | Reduce -11.7% | 4,267,156 | $360.0M |
| Vulcan Value Partners, LLC | 5.86% | Add +3.1% | 3,831,609 | $323.2M |
| Northern Trust Corp. | 0.04% | Reduce -2.9% | 3,752,394 | $316.6M |
| Franklin Resources Inc. | 0.08% | Add +8.6% | 3,736,949 | $315.3M |
| Bank of America Corp. | 0.02% | Reduce -27.9% | 3,696,857 | $311.9M |
| T. Rowe Price Investment Management, Inc. | 0.18% | Reduce -45.9% | 3,510,524 | $296.2M |
| Nuveen, LLC | 0.08% | Add +224.1% | 3,506,625 | $295.9M |
| Tiger Global Management | 0.85% | No change | 3,245,109 | $273.8M |
| Blair William & Co. | 0.70% | Add +9.0% | 3,128,473 | $263.9M |
| Third Point | 3.07% | Reduce -2.2% | 3,017,000 | $254.5M |
| Amundi | 0.08% | Reduce -2.0% | 3,135,136 | $254.4M |
| Legal & General Group Plc | 0.05% | Add +7.8% | 2,699,757 | $227.8M |
| Charles Schwab Investment Management Inc. | 0.04% | Reduce -14.1% | 2,656,604 | $224.1M |
| Brown Advisory Inc. | 0.27% | Reduce -7.9% | 2,464,724 | $207.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.05% | Reduce -17.5% | 2,459,610 | $207.5M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.53% | Add +7.6% | 2,437,206 | $205.6M |
| Dimensional Fund Advisors LP | 0.04% | Add +3.1% | 2,236,180 | $188.7M |
| Goldman Sachs Group Inc. | 0.03% | Add +0.6% | 2,195,212 | $185.2M |
| DF Dent & Co. Inc. | 2.37% | Reduce -4.1% | 2,177,724 | $183.7M |
| Fayez Sarofim & Co | 0.43% | Add +0.8% | 2,174,799 | $183.5M |
| RGM Capital, LLC | 7.43% | Reduce -1.4% | 2,092,703 | $176.6M |
| JPMorgan Chase & Co. | 0.01% | Reduce -16.3% | 1,916,865 | $161.7M |
| Viking Global Investors | 0.41% | Reduce -42.5% | 1,849,729 | $156.1M |
| Voya Investment Management LLC | 0.18% | Add +49.9% | 1,846,286 | $155.8M |
| CIBC Private Wealth Group LLC | 0.26% | Reduce -0.7% | 1,823,106 | $153.8M |
| Citadel Advisors | 0.12% | Add +5391.3% | 1,726,618 | $145.7M |
| Beck Mack & Oliver LLC | 2.64% | Reduce -0.2% | 1,723,432 | $145.4M |
| Envestnet Asset Management Inc. | 0.04% | Reduce -1.7% | 1,709,175 | $144.2M |
| Riverbridge Partners LLC | 2.36% | Reduce -5.4% | 1,659,183 | $140.0M |
| Mackenzie Financial Corp. | 0.17% | Reduce -11.7% | 1,645,936 | $138.9M |
| FMR LLC | 0.01% | Add +21.9% | 1,580,154 | $133.3M |
| Federated Hermes, Inc. | 0.22% | Reduce -0.5% | 1,463,345 | $123.5M |
| Deutsche Bank AG | 0.04% | Reduce -15.9% | 1,282,786 | $108.2M |
| Kensico Capital Management Corp. | 1.67% | No change | 1,282,400 | $108.2M |
| Royal Bank of Canada | 0.02% | Add +0.2% | 1,276,840 | $107.7M |
| Barclays PLC | 0.04% | Add +8.1% | 1,266,116 | $106.8M |
| T. Rowe Price Associates Inc. | 0.01% | Add +5.8% | 1,264,162 | $106.7M |
| Bares Capital Management, Inc. | 9.54% | Add +0.9% | 1,226,251 | $103.5M |
| Ameriprise Financial Inc. | 0.02% | Add +13.4% | 1,222,534 | $103.1M |
| Swiss National Bank | 0.06% | Reduce -4.8% | 1,216,165 | $102.6M |
| Wells Fargo & Company | 0.02% | Reduce -14.6% | 1,136,954 | $95.9M |
| Sumitomo Mitsui Trust Group, Inc. | 0.05% | Add +7.4% | 1,096,701 | $92.5M |
| Harding Loevner LP | 0.67% | Reduce -26.2% | 1,083,322 | $91.4M |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.06% | Add +8.8% | 1,007,527 | $85.0M |
| Spyglass Capital Management LLC | 4.51% | Add +24.8% | 1,002,717 | $84.6M |
| Focus Partners Wealth | 0.14% | Add +0.8% | 997,953 | $84.2M |
| Chicago Capital, LLC | 1.99% | Reduce -0.4% | 960,042 | $81.0M |
| D. E. Shaw & Co. | 0.07% | Reduce -1.2% | 905,488 | $76.4M |
| ShawSpring Partners LLC | 11.24% | Reduce -33.9% | 896,034 | $75.6M |
| Pictet Asset Management Holding SA | 0.07% | Reduce -7.2% | 848,792 | $71.6M |
| TimesSquare Capital Management, LLC | 0.97% | Reduce -0.5% | 806,531 | $68.0M |
| American Capital Management Inc. | 2.67% | Reduce -0.3% | 793,664 | $67.0M |
| Rhumbline Advisers | 0.05% | Add +1.0% | 789,863 | $66.6M |
| Raymond James Financial Inc. | 0.02% | Add +16.2% | 769,369 | $64.9M |
| Stephens Investment Management Group LLC | 0.84% | Reduce -0.9% | 766,512 | $64.7M |
| Peregrine Capital Management LLC | 1.93% | Add +8.6% | 760,836 | $64.2M |
| Kayne Anderson Rudnick Investment Management LLC | 0.15% | Reduce -5.2% | 741,641 | $62.6M |
| California Public Employees Retirement System | 0.04% | Add +6.3% | 730,562 | $61.6M |
| Weitz Investment Management, Inc. | 3.30% | Reduce -6.0% | 719,850 | $60.7M |
| HSBC Holdings PLC | 0.04% | Add +1.3% | 717,320 | $60.4M |
| Baird Financial Group, Inc. | 0.10% | Reduce -23.2% | 707,544 | $59.7M |
| Ensign Peak Advisors, Inc | 0.10% | Reduce -9.5% | 698,001 | $58.9M |
| California State Teachers Retirement System | 0.06% | Reduce -0.3% | 696,243 | $58.7M |
| CI Investments Inc. | 0.21% | Reduce -3.9% | 680,839 | $57.4M |
| First Trust Advisors LP | 0.04% | Add +9.4% | 674,750 | $56.9M |
| Citigroup Inc. | 0.04% | Reduce -19.2% | 672,749 | $56.8M |
| BNP Paribas Financial Markets | 0.04% | Reduce -47.5% | 671,869 | $56.7M |
| Sei Investments Co. | 0.06% | Add +2.6% | 671,686 | $56.7M |
| Douglas Lane & Associates, LLC | 0.77% | Add +12.1% | 654,782 | $55.2M |
| Parnassus Investments, LLC | 0.12% | Reduce -2.8% | 636,974 | $53.7M |
| Marshall Wace, LLP | 0.06% | Add +401.9% | 635,944 | $53.7M |
| Canada Pension Plan Investment Board | 0.04% | Add +18.7% | 634,330 | $53.5M |
| Natixis Advisors, LLC | 0.07% | Add +6.3% | 571,265 | $48.2M |
| National Pension Service | 0.04% | Add +2.2% | 553,599 | $46.7M |
| American Century Companies Inc. | 0.02% | Add +682.3% | 551,523 | $46.5M |
| Telemark Asset Management, LLC | 4.40% | No change | 550,000 | $46.4M |
| ProShare Advisors LLC | 0.10% | Reduce -17.2% | 547,465 | $46.2M |
| Ion Asset Management Ltd. | 5.50% | Reduce -54.4% | 534,000 | $45.1M |
| ThornTree Capital Partners LP | 6.59% | Reduce -0.5% | 510,201 | $43.0M |
| Frontier Capital Management Co. LLC | 0.37% | Reduce -7.0% | 490,623 | $41.4M |
| Russell Investments Group, Ltd. | 0.05% | Add +6.4% | 475,423 | $40.1M |
| Bank of Montreal | 0.02% | Add +11.8% | 469,680 | $39.6M |
"% of holder's portfolio" is CSGP's weight in each manager's 13F, not the share of Costar Group Inc. the manager owns.