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 |
|---|---|---|---|---|---|
| Knollwood Investment Advisory, LLC | 41,863 | $2.81M | 0.26% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 43,408 | $2.77M | 0.03% | −3,728−7.9% | Reduced |
| Linden Thomas Advisory Services, LLC | 40,810 | $2.74M | 0.28% | −2,397−5.5% | Reduced |
| Atria Investments LLC | 40,797 | $2.74M | 0.03% | −14,224−25.9% | Reduced |
| Tredje AP-fonden | 40,683 | $2.74M | 0.02% | 00.0% | Unchanged |
| Profund Advisors LLC | 40,671 | $2.73M | 0.08% | +4,344+12.0% | Added |
| Motley Fool Asset Management LLC | 40,343 | $2.71M | 0.11% | −43,691−52.0% | Reduced |
| Northwestern Mutual Wealth Management Co | 39,867 | $2.68M | 0.00% | −15,367−27.8% | Reduced |
| O'Shaughnessy Asset Management, LLC | 39,802 | $2.68M | 0.01% | −22,916−36.5% | Reduced |
| Oppenheimer & Co Inc | 39,791 | $2.68M | 0.04% | −4,039−9.2% | Reduced |
| Norinchukin Bank, The | 39,320 | $2.64M | 0.03% | +3,781+10.6% | Added |
| Schonfeld Strategic Advisors LLC | 39,225 | $2.64M | 0.01% | +25,645+188.8% | Added |
| Swiss Life Asset Management Ltd | 39,175 | $2.63M | 0.01% | −607−1.5% | Reduced |
| Janney Montgomery Scott LLC | 39,121 | $2.63M | 0.01% | −10,960−21.9% | Reduced |
| Investment Management Corp of Ontario | 38,843 | $2.61M | 0.03% | +19,023+96.0% | Added |
| North Star Asset Management Inc | 38,502 | $2.59M | 0.10% | +3,563+10.2% | Added |
| Cambridge Investment Research Advisors, Inc. | 37,851 | $2.54M | 0.01% | +130.0% | Added |
| Katamaran Capital LLP | 36,651 | $2.46M | 1.86% | +36,651 | New |
| Quantitative Investment Management, LLC | 35,749 | $2.40M | 0.23% | +35,749 | New |
| Boomfish Wealth Group, LLC | 34,474 | $2.32M | 1.24% | +2,052+6.3% | Added |
| Weiss Asset Management LP | 34,320 | $2.31M | 0.03% | +34,320 | New |
| EagleClaw Capital Managment, LLC | 34,150 | $2.30M | 0.33% | +300+0.9% | Added |
| Formula Growth Ltd | 34,000 | $2.29M | 0.88% | 00.0% | Unchanged |
| Allstate Corp | 33,862 | $2.28M | 0.03% | +17,764+110.3% | Added |
| D.A. Davidson & Co. | 33,582 | $2.26M | 0.01% | −1,086−3.1% | Reduced |
| Nisa Investment Advisors, LLC | 33,462 | $2.25M | 0.01% | −5,389−13.9% | Reduced |
| Scotia Capital Inc. | 33,356 | $2.24M | 0.01% | +1,235+3.8% | Added |
| Papp L Roy & Associates | 33,254 | $2.24M | 0.25% | +46+0.1% | Added |
| Captrust Financial Advisors | 33,234 | $2.23M | 0.00% | +4,984+17.6% | Added |
| Schroder Investment Management Group | 33,183 | $2.23M | 0.00% | −4,982−13.1% | Reduced |
| Walleye Capital LLC | 32,462 | $2.18M | 0.01% | +17,100+111.3% | Added |
| Sterling Capital Management LLC | 32,306 | $2.17M | 0.04% | −39,758−55.2% | Reduced |
| SlateStone Wealth, LLC | 32,226 | $2.17M | 0.18% | −6,303−16.4% | Reduced |
| Barbara Oil Co. | 32,000 | $2.15M | 0.80% | 00.0% | Unchanged |
| Delta Global Management LP | 31,841 | $2.14M | 0.16% | +31,841 | New |
| Centaurus Financial, Inc. | 31,720 | $2.13M | 0.10% | −1,767−5.3% | Reduced |
| Harvest Fund Management Co., Ltd | 31,644 | $2.13M | 0.08% | +5,643+21.7% | Added |
| Mizuho Securities USA LLC | 30,860 | $2.12M | 0.04% | +40.0% | Added |
| Malaga Cove Capital, LLC | 30,776 | $2.07M | 0.72% | +4,231+15.9% | Added |
| Numerai GP LLC | 30,135 | $2.03M | 0.24% | +30,135 | New |
| Mercer Global Advisors Inc | 29,005 | $1.95M | 0.00% | −3,524−10.8% | Reduced |
| Stephens Inc | 28,916 | $1.94M | 0.02% | −1,878−6.1% | Reduced |
| Gateway Investment Advisers LLC | 28,779 | $1.94M | 0.02% | −2,738−8.7% | Reduced |
| Liontrust Investment Partners LLP | 28,324 | $1.90M | 0.03% | 00.0% | Unchanged |
| Lido Advisors, LLC | 25,929 | $1.90M | 0.01% | −1,607−5.8% | Reduced |
| Principal Securities, Inc. | 28,274 | $1.90M | 0.03% | −3,512−11.0% | Reduced |
| Tower Research Capital LLC (TRC) | 28,220 | $1.90M | 0.05% | +9,863+53.7% | Added |
| Intech Investment Management LLC | 28,129 | $1.89M | 0.02% | −1,376−4.7% | Reduced |
| JustInvest LLC | 27,859 | $1.87M | 0.02% | −15,927−36.4% | Reduced |
| DoubleLine ETF Adviser LP | 27,475 | $1.85M | 0.55% | +1,080+4.1% | Added |
| AG2R la Mondiale Gestion D'Actifs | 27,342 | $1.84M | 0.08% | +5,283+23.9% | Added |
| Generali Asset Management SPA SGR | 27,176 | $1.83M | 0.04% | +3,296+13.8% | Added |
| Harbor Advisors LLC | 26,560 | $1.79M | 0.27% | +4,000+17.7% | Added |
| Wealthfront Advisers LLC | 26,280 | $1.77M | 0.00% | −13,049−33.2% | Reduced |
| Kentucky Retirement Systems | 26,218 | $1.76M | 0.05% | 00.0% | Unchanged |
| Prudential PLC | 26,124 | $1.76M | 0.01% | −141,868−84.4% | Reduced |
| QRG Capital Management, Inc. | 25,952 | $1.75M | 0.02% | −5,331−17.0% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 25,058 | $1.68M | 0.00% | +9,904+65.4% | Added |
| Verdence Capital Advisors LLC | 24,770 | $1.67M | 0.10% | +457+1.9% | Added |
| Brinker Capital Investments, LLC | 24,721 | $1.66M | 0.01% | −9,168−27.1% | Reduced |
| Ethic Inc. | 24,679 | $1.66M | 0.03% | −11,409−31.6% | Reduced |
| Hartford Investment Management Co | 24,572 | $1.65M | 0.05% | −294−1.2% | Reduced |
| Pathstone Holdings, LLC | 24,534 | $1.65M | 0.01% | −16,348−40.0% | Reduced |
| AE Wealth Management LLC | 24,512 | $1.65M | 0.01% | −3,134−11.3% | Reduced |
| Virtus Investment Advisers, Inc. | 24,381 | $1.64M | 0.45% | +4,758+24.2% | Added |
| Sanctuary Advisors, LLC | 24,271 | $1.63M | 0.01% | −5,842−19.4% | Reduced |
| Crossmark Global Holdings, Inc. | 23,599 | $1.59M | 0.02% | +1,759+8.1% | Added |
| Park Avenue Securities LLC | 23,179 | $1.56M | 0.01% | −3,344−12.6% | Reduced |
| Alps Advisors Inc | 22,955 | $1.54M | 0.01% | +2,205+10.6% | Added |
| Wiley Bros.-Aintree Capital, LLC | 22,927 | $1.51M | 0.01% | −3,849−14.4% | Reduced |
| Twin Tree Management, LP | 22,466 | $1.51M | 0.15% | +22,466 | New |
| Aurora Investment Managers, LLC. | 22,302 | $1.50M | 0.85% | 00.0% | Unchanged |
| B. Metzler seel. Sohn & Co. AG | 22,196 | $1.49M | 0.01% | +2,853+14.7% | Added |
| Red Spruce Capital, LLC | 21,898 | $1.47M | 0.59% | −2,192−9.1% | Reduced |
| Third View Private Wealth, LLC | 21,836 | $1.47M | 0.20% | +21,836 | New |
| Gulf International Bank (UK) Ltd | 21,782 | $1.47M | 0.05% | 00.0% | Unchanged |
| Allianz Asset Management GmbH | 21,775 | $1.46M | 0.00% | −4,781−18.0% | Reduced |
| ASR Vermogensbeheer N.V. | 21,576 | $1.45M | 0.02% | −181−0.8% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 21,517 | $1.45M | 0.00% | +186+0.9% | Added |
| Y-Intercept (Hong Kong) Ltd | 21,251 | $1.43M | 0.03% | −97,009−82.0% | Reduced |
| Maryland State Retirement & Pension System | 21,232 | $1.43M | 0.03% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 20,789 | $1.40M | 0.03% | +10,625+104.5% | Added |
| CWM, LLC | 20,717 | $1.39M | 0.00% | +6,340+44.1% | Added |
| Natixis | 20,538 | $1.38M | 0.01% | −27,405−57.2% | Reduced |
| First Foundation Advisors | 20,535 | $1.38M | 0.05% | −12,156−37.2% | Reduced |
| Oak Thistle LLC | 20,314 | $1.37M | 0.19% | +2,600+14.7% | Added |
| First Bank & Trust | 20,028 | $1.35M | 0.22% | −3,952−16.5% | Reduced |
| Group One Trading, L.P. | 19,737 | $1.33M | 0.04% | +18,676+1,760.2% | Added |
| New Mexico Educational Retirement Board | 19,600 | $1.32M | 0.04% | +500+2.6% | Added |
| Maridea Wealth Management LLC | 19,393 | $1.30M | 0.20% | +4,671+31.7% | Added |
| Bessemer Group Inc | 19,244 | $1.29M | 0.00% | +472+2.5% | Added |
| Ameritas Investment Partners, Inc. | 19,184 | $1.29M | 0.04% | +1,193+6.6% | Added |
| Portside Wealth Group, LLC | 19,148 | $1.29M | 0.17% | −4,842−20.2% | Reduced |
| Toroso Investments, LLC | 19,091 | $1.28M | 0.01% | −723−3.6% | Reduced |
| Commerce Bank | 18,869 | $1.27M | 0.01% | +648+3.6% | Added |
| Candriam Luxembourg S.C.A. | 18,739 | $1.26M | 0.01% | −6,905−26.9% | Reduced |
| Baird Financial Group, Inc. | 18,552 | $1.25M | 0.00% | −688,992−97.4% | Reduced |
| Quotient Wealth Partners, LLC | 18,247 | $1.23M | 0.03% | −1,046−5.4% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 17,981 | $1.21M | 0.01% | +1,717+10.6% | Added |
| M&T Bank Corp | 17,922 | $1.20M | 0.00% | +670+3.9% | Added |