Costar Group, Inc.
CSGP- Exchange
- Nasdaq
- Industry
- Services-Business Services, NEC
- SEC CIK
- 0001057352
In the last 90 days, Costar Group, Inc. insiders filed 1 open-market purchase and 2 sales; 760 institutions reported holding it in 13F filings for Q2 2026, worth $11.7B in total; superinvestors Akre Capital Management and Weitz Investment Management hold it.
13F holders, Q4 2025
Institutional positions in Costar Group, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 847
- −40 vs. Q3 2025
- Shares held
- 422.7M
- +11.7M (+2.8%) vs. Q3 2025
- Total value
- $28.4B
- −$6.23B (−18.0%) vs. Q3 2025
- New holders
- 103
- 273 more added
- Sold out
- 143
- 388 more reduced
18 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting CSGP on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 760 | $11.7B |
| Q1 2026 | 797 | $16.8B |
| Q4 2025 | 847 | $28.4B |
| Q3 2025 | 905 | $34.9B |
| Q2 2025 | 873 | $34.2B |
| Q1 2025 | 858 | $33.9B |
| Q4 2024 | 805 | $28.9B |
| Q3 2024 | 773 | $30.0B |
| Q2 2024 | 767 | $29.3B |
| Q1 2024 | 767 | $38.4B |
| Q4 2023 | 737 | $34.4B |
| Q3 2023 | 690 | $30.1B |
| Q2 2023 | 714 | $35.5B |
| Q1 2023 | 692 | $26.7B |
| Q4 2022 | 704 | $30.4B |
| Q3 2022 | 634 | $28.0B |
| Q2 2022 | 591 | $23.0B |
| Q1 2022 | 589 | $25.2B |
| Q4 2021 | 633 | $29.6B |
| Q3 2021 | 594 | $32.3B |
| Q2 2021 | 607 | $31.1B |
| Q1 2021 | 593 | $31.2B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Westerkirk Capital Inc. | 12,600 | $847.2K | 0.08% | +900+7.7% | Added |
| Howard Capital Management Inc. | 12,762 | $858.1K | 0.01% | +290+2.3% | Added |
| Vestcor Inc | 12,780 | $859.0K | 0.02% | +900+7.6% | Added |
| Chicago Trust Co NA | 12,999 | $874.1K | 0.14% | 00.0% | Unchanged |
| NewEdge Wealth, LLC | 13,009 | $874.7K | 0.01% | −1,497−10.3% | Reduced |
| Advisor Group Holdings, Inc. | 13,109 | $881.4K | 0.00% | −29,984−69.6% | Reduced |
| Entropy Technologies, LP | 13,121 | $882.3K | 0.05% | +13,121 | New |
| Regatta Capital Group, LLC | 13,381 | $899.7K | 0.14% | −45−0.3% | Reduced |
| Metis Global Partners, LLC | 13,457 | $904.8K | 0.02% | −847−5.9% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 13,542 | $910.6K | 0.01% | +39+0.3% | Added |
| Voya Financial Advisors, Inc. | 13,473 | $910.8K | 0.09% | −919−6.4% | Reduced |
| Banque Pictet & Cie SA | 13,550 | $911.1K | 0.01% | −16,449−54.8% | Reduced |
| Davis Capital Management | 13,694 | $920.8K | 0.63% | −583−4.1% | Reduced |
| Commonwealth Equity Services, LLC | 13,723 | $922.8K | 0.00% | −7,638−35.8% | Reduced |
| Banco Bilbao Vizcaya Argentaria, S.A. | 14,005 | $941.3K | 0.01% | +588+4.4% | Added |
| Teacher Retirement System of Texas | 14,000 | $941.4K | 0.00% | −41,256−74.7% | Reduced |
| Horizon Investments, LLC | 14,079 | $946.7K | 0.01% | +247+1.8% | Added |
| Sumitomo Life Insurance Co | 14,090 | $947.4K | 0.03% | +170+1.2% | Added |
| Vident Advisory, LLC | 14,104 | $948.4K | 0.01% | +815+6.1% | Added |
| Canada Post Corp Registered Pension Plan | 14,170 | $952.8K | 0.04% | +2,250+18.9% | Added |
| North Dakota State Investment Board | 14,316 | $962.6K | 0.04% | +14,316 | New |
| Kestra Advisory Services, LLC | 14,355 | $965.2K | 0.00% | −4,588−24.2% | Reduced |
| Summit Trail Advisors, LLC | 14,455 | $972.0K | 0.02% | +1,581+12.3% | Added |
| Ieq Capital, LLC | 14,570 | $979.7K | 0.00% | −6,431−30.6% | Reduced |
| Guidance Capital, Inc | 15,027 | $995.7K | 0.24% | +1,106+7.9% | Added |
| Federation des caisses Desjardins du Quebec | 14,942 | $1.00M | 0.00% | −13,663−47.8% | Reduced |
| Redmond Asset Management, LLC | 15,309 | $1.03M | 0.26% | −433−2.8% | Reduced |
| Institute for Wealth Management, LLC. | 15,656 | $1.05M | 0.11% | −611−3.8% | Reduced |
| Edgestream Partners, L.P. | 15,805 | $1.06M | 0.03% | +15,805 | New |
| Benjamin Edwards Inc | 16,003 | $1.08M | 0.01% | +625+4.1% | Added |
| RMR Wealth Builders | 16,036 | $1.08M | 0.09% | 00.0% | Unchanged |
| Verition Fund Management LLC | 16,042 | $1.08M | 0.01% | −13,891−46.4% | Reduced |
| Tokio Marine Asset Management Co Ltd | 16,211 | $1.09M | 0.04% | +784+5.1% | Added |
| Lincoln Capital LLC | 16,347 | $1.10M | 0.20% | −4,896−23.0% | Reduced |
| Keybank National Association | 16,391 | $1.10M | 0.00% | −2,887−15.0% | Reduced |
| Chicago Partners Investment Group LLC | 16,841 | $1.10M | 0.03% | +2,454+17.1% | Added |
| Mattern Capital Management, LLC | 16,463 | $1.11M | 0.13% | +3,266+24.7% | Added |
| E. Ohman J:or Asset Management AB | 16,620 | $1.12M | 0.03% | +4,320+35.1% | Added |
| Elo Mutual Pension Insurance Co | 16,684 | $1.12M | 0.02% | −42,578−71.8% | Reduced |
| Lombard Odier Asset Management (Switzerland) SA | 16,820 | $1.13M | 0.05% | −738−4.2% | Reduced |
| Skylands Capital, LLC | 17,050 | $1.15M | 0.16% | +17,050 | New |
| Omers Administration Corp | 17,087 | $1.15M | 0.01% | 00.0% | Unchanged |
| Callan Family Office, LLC | 17,106 | $1.15M | 0.02% | +4,585+36.6% | Added |
| Main Management ETF Advisors, LLC | 17,226 | $1.16M | 0.04% | +176+1.0% | Added |
| Dai-Ichi Life Insurance Company, Ltd | 17,377 | $1.17M | 0.03% | 00.0% | Unchanged |
| MUFG Securities EMEA plc | 17,388 | $1.17M | 0.01% | +9,279+114.4% | Added |
| Icon Wealth Advisors, LLC | 17,499 | $1.18M | 0.08% | −6,324−26.5% | Reduced |
| M&T Bank Corp | 17,922 | $1.20M | 0.00% | +670+3.9% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 17,981 | $1.21M | 0.01% | +1,717+10.6% | Added |
| Quotient Wealth Partners, LLC | 18,247 | $1.23M | 0.03% | −1,046−5.4% | Reduced |
| Baird Financial Group, Inc. | 18,552 | $1.25M | 0.00% | −688,992−97.4% | Reduced |
| Candriam Luxembourg S.C.A. | 18,739 | $1.26M | 0.01% | −6,905−26.9% | Reduced |
| Commerce Bank | 18,869 | $1.27M | 0.01% | +648+3.6% | Added |
| Toroso Investments, LLC | 19,091 | $1.28M | 0.01% | −723−3.6% | Reduced |
| Portside Wealth Group, LLC | 19,148 | $1.29M | 0.17% | −4,842−20.2% | Reduced |
| Ameritas Investment Partners, Inc. | 19,184 | $1.29M | 0.04% | +1,193+6.6% | Added |
| Bessemer Group Inc | 19,244 | $1.29M | 0.00% | +472+2.5% | Added |
| Maridea Wealth Management LLC | 19,393 | $1.30M | 0.20% | +4,671+31.7% | Added |
| New Mexico Educational Retirement Board | 19,600 | $1.32M | 0.04% | +500+2.6% | Added |
| Group One Trading, L.P. | 19,737 | $1.33M | 0.04% | +18,676+1,760.2% | Added |
| First Bank & Trust | 20,028 | $1.35M | 0.22% | −3,952−16.5% | Reduced |
| Oak Thistle LLC | 20,314 | $1.37M | 0.19% | +2,600+14.7% | Added |
| First Foundation Advisors | 20,535 | $1.38M | 0.05% | −12,156−37.2% | Reduced |
| Natixis | 20,538 | $1.38M | 0.01% | −27,405−57.2% | Reduced |
| CWM, LLC | 20,717 | $1.39M | 0.00% | +6,340+44.1% | Added |
| Parallel Advisors, LLC | 20,789 | $1.40M | 0.03% | +10,625+104.5% | Added |
| Maryland State Retirement & Pension System | 21,232 | $1.43M | 0.03% | 00.0% | Unchanged |
| Y-Intercept (Hong Kong) Ltd | 21,251 | $1.43M | 0.03% | −97,009−82.0% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 21,517 | $1.45M | 0.00% | +186+0.9% | Added |
| ASR Vermogensbeheer N.V. | 21,576 | $1.45M | 0.02% | −181−0.8% | Reduced |
| Allianz Asset Management GmbH | 21,775 | $1.46M | 0.00% | −4,781−18.0% | Reduced |
| Gulf International Bank (UK) Ltd | 21,782 | $1.47M | 0.05% | 00.0% | Unchanged |
| Third View Private Wealth, LLC | 21,836 | $1.47M | 0.20% | +21,836 | New |
| Red Spruce Capital, LLC | 21,898 | $1.47M | 0.59% | −2,192−9.1% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 22,196 | $1.49M | 0.01% | +2,853+14.7% | Added |
| Aurora Investment Managers, LLC. | 22,302 | $1.50M | 0.85% | 00.0% | Unchanged |
| Twin Tree Management, LP | 22,466 | $1.51M | 0.15% | +22,466 | New |
| Wiley Bros.-Aintree Capital, LLC | 22,927 | $1.51M | 0.01% | −3,849−14.4% | Reduced |
| Alps Advisors Inc | 22,955 | $1.54M | 0.01% | +2,205+10.6% | Added |
| Park Avenue Securities LLC | 23,179 | $1.56M | 0.01% | −3,344−12.6% | Reduced |
| Crossmark Global Holdings, Inc. | 23,599 | $1.59M | 0.02% | +1,759+8.1% | Added |
| Sanctuary Advisors, LLC | 24,271 | $1.63M | 0.01% | −5,842−19.4% | Reduced |
| Virtus Investment Advisers, Inc. | 24,381 | $1.64M | 0.45% | +4,758+24.2% | Added |
| AE Wealth Management LLC | 24,512 | $1.65M | 0.01% | −3,134−11.3% | Reduced |
| Pathstone Holdings, LLC | 24,534 | $1.65M | 0.01% | −16,348−40.0% | Reduced |
| Hartford Investment Management Co | 24,572 | $1.65M | 0.05% | −294−1.2% | Reduced |
| Ethic Inc. | 24,679 | $1.66M | 0.03% | −11,409−31.6% | Reduced |
| Brinker Capital Investments, LLC | 24,721 | $1.66M | 0.01% | −9,168−27.1% | Reduced |
| Verdence Capital Advisors LLC | 24,770 | $1.67M | 0.10% | +457+1.9% | Added |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 25,058 | $1.68M | 0.00% | +9,904+65.4% | Added |
| QRG Capital Management, Inc. | 25,952 | $1.75M | 0.02% | −5,331−17.0% | Reduced |
| Prudential PLC | 26,124 | $1.76M | 0.01% | −141,868−84.4% | Reduced |
| Kentucky Retirement Systems | 26,218 | $1.76M | 0.05% | 00.0% | Unchanged |
| Wealthfront Advisers LLC | 26,280 | $1.77M | 0.00% | −13,049−33.2% | Reduced |
| Harbor Advisors LLC | 26,560 | $1.79M | 0.27% | +4,000+17.7% | Added |
| Generali Asset Management SPA SGR | 27,176 | $1.83M | 0.04% | +3,296+13.8% | Added |
| AG2R la Mondiale Gestion D'Actifs | 27,342 | $1.84M | 0.08% | +5,283+23.9% | Added |
| DoubleLine ETF Adviser LP | 27,475 | $1.85M | 0.55% | +1,080+4.1% | Added |
| JustInvest LLC | 27,859 | $1.87M | 0.02% | −15,927−36.4% | Reduced |
| Intech Investment Management LLC | 28,129 | $1.89M | 0.02% | −1,376−4.7% | Reduced |