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, Q3 2025
Institutional positions in Costar Group, Inc. as of Sep 30, 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
- 905
- +46 vs. Q2 2025
- Shares held
- 413.6M
- −5.67M (−1.4%) vs. Q2 2025
- Total value
- $34.9B
- +$1.15B (+3.4%) vs. Q2 2025
- New holders
- 107
- 364 more added
- Sold out
- 61
- 314 more reduced
14 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Turtle Creek Wealth Advisors, LLC | 9,872 | $832.9K | 0.07% | +119+1.2% | Added |
| Magnetar Financial LLC | 9,878 | $833.4K | 0.01% | +9,878 | New |
| Capital International Inc | 9,959 | $840.2K | 0.01% | −11,414−53.4% | Reduced |
| Parallel Advisors, LLC | 10,164 | $857.6K | 0.02% | +3,708+57.4% | Added |
| Venturi Wealth Management, LLC | 10,309 | $869.8K | 0.04% | +717+7.5% | Added |
| Sowell Financial Services LLC | 10,523 | $887.8K | 0.03% | −591−5.3% | Reduced |
| Gilbert & Cook, Inc. | 10,610 | $895.2K | 0.12% | −280−2.6% | Reduced |
| Everence Capital Management Inc | 10,633 | $897.0K | 0.05% | +4,043+61.4% | Added |
| CenterBook Partners LP | 10,808 | $911.9K | 0.05% | +10,808 | New |
| Atomi Financial Group, Inc. | 10,883 | $918.2K | 0.03% | +1,366+14.4% | Added |
| Groupama Asset Managment | 10,916 | $921.0K | 0.01% | +10,916 | New |
| GAMMA Investing LLC | 10,926 | $921.8K | 0.05% | +1,734+18.9% | Added |
| Kentucky Retirement Systems Insurance Trust Fund | 10,989 | $927.1K | 0.06% | −303−2.7% | Reduced |
| China Universal Asset Management Co., Ltd. | 11,184 | $943.6K | 0.08% | +1,605+16.8% | Added |
| Nomura Holdings Inc | 11,250 | $949.2K | 0.00% | +11,250 | New |
| Squarepoint Ops LLC | 11,300 | $953.4K | 0.00% | −4,862−30.1% | Reduced |
| MUFG Securities Americas Inc. | 11,424 | $963.8K | 0.06% | +2,074+22.2% | Added |
| Postrock Partners LLC | 11,440 | $965.2K | 0.43% | 00.0% | Unchanged |
| Westerkirk Capital Inc. | 11,700 | $987.1K | 0.11% | 00.0% | Unchanged |
| Accretive Wealth Partners, LLC | 11,751 | $991.4K | 0.30% | +308+2.7% | Added |
| Ascent Group, LLC | 11,753 | $991.6K | 0.04% | +1,250+11.9% | Added |
| Gibbs Wealth Management | 11,777 | $993.6K | 0.22% | −1,981−14.4% | Reduced |
| Personal Cfo Solutions, LLC | 11,810 | $996.4K | 0.17% | +391+3.4% | Added |
| Fifth Third Bancorp | 11,864 | $1.00M | 0.00% | −165−1.4% | Reduced |
| Vestcor Inc | 11,880 | $1.00M | 0.03% | +2,924+32.6% | Added |
| Bleakley Financial Group, LLC | 11,896 | $1.00M | 0.02% | +366+3.2% | Added |
| Canada Post Corp Registered Pension Plan | 11,920 | $1.00M | 0.04% | +6,560+122.4% | Added |
| NewEdge Wealth, LLC | 14,506 | $1.02M | 0.01% | −11,792−44.8% | Reduced |
| E. Ohman J:or Asset Management AB | 12,300 | $1.04M | 0.02% | 00.0% | Unchanged |
| Louisbourg Investments Inc. | 15,685 | $1.05M | 0.23% | −10,845−40.9% | Reduced |
| Howard Capital Management Inc. | 12,472 | $1.05M | 0.01% | −52−0.4% | Reduced |
| Callan Family Office, LLC | 12,521 | $1.06M | 0.03% | −5,152−29.2% | Reduced |
| Phraction Management LLC | 12,562 | $1.06M | 0.31% | −1,780−12.4% | Reduced |
| GTS Securities LLC | 12,595 | $1.06M | 0.04% | +9,118+262.2% | Added |
| Banque Cantonale Vaudoise | 12,671 | $1.07M | 0.04% | +12,671 | New |
| Bell Bank | 12,783 | $1.08M | 0.05% | −400−3.0% | Reduced |
| Guidance Capital, Inc | 13,921 | $1.08M | 0.28% | +340+2.5% | Added |
| DRW Securities, LLC | 12,850 | $1.08M | 0.06% | +9,027+236.1% | Added |
| Summit Trail Advisors, LLC | 12,874 | $1.09M | 0.02% | +3,928+43.9% | Added |
| Bokf, NA | 12,976 | $1.09M | 0.02% | −495−3.7% | Reduced |
| Assenagon Asset Management S.A. | 12,997 | $1.10M | 0.00% | +4,833+59.2% | Added |
| Chicago Trust Co NA | 12,999 | $1.10M | 0.15% | −1,241−8.7% | Reduced |
| Maridea Wealth Management LLC | 14,722 | $1.10M | 0.17% | +14,722 | New |
| Mattern Capital Management, LLC | 13,197 | $1.11M | 0.13% | +2,134+19.3% | Added |
| Vestmark Advisory Solutions, Inc. | 13,244 | $1.12M | 0.02% | −91−0.7% | Reduced |
| Vident Advisory, LLC | 13,289 | $1.12M | 0.01% | +1,789+15.6% | Added |
| Chicago Partners Investment Group LLC | 14,387 | $1.13M | 0.03% | −2,117−12.8% | Reduced |
| Banco Bilbao Vizcaya Argentaria, S.A. | 13,417 | $1.13M | 0.01% | +4,033+43.0% | Added |
| Regatta Capital Group, LLC | 13,426 | $1.13M | 0.18% | +392+3.0% | Added |
| Alliance Wealth Advisors, LLC | 13,490 | $1.14M | 0.27% | −3,237−19.4% | Reduced |
| Northwestern Mutual Investment Management Company, LLC | 13,503 | $1.14M | 0.02% | +45+0.3% | Added |
| Jump Financial, LLC | 13,574 | $1.15M | 0.01% | −14,607−51.8% | Reduced |
| Schonfeld Strategic Advisors LLC | 13,580 | $1.15M | 0.01% | −19,911−59.5% | Reduced |
| RSM US Wealth Management LLC | 13,612 | $1.15M | 0.01% | −469−3.3% | Reduced |
| Miracle Mile Advisors, LLC | 13,624 | $1.15M | 0.02% | +3,409+33.4% | Added |
| Empowered Funds, LLC | 13,792 | $1.16M | 0.01% | +4,395+46.8% | Added |
| Horizon Investments, LLC | 13,832 | $1.17M | 0.02% | +1,451+11.7% | Added |
| Sumitomo Life Insurance Co | 13,920 | $1.17M | 0.04% | −507−3.5% | Reduced |
| Meeder Asset Management Inc | 14,042 | $1.18M | 0.07% | −2,217−13.6% | Reduced |
| Grove Bank & Trust | 14,268 | $1.20M | 0.14% | −1,082−7.0% | Reduced |
| Davis Capital Management | 14,277 | $1.20M | 0.83% | +14,277 | New |
| Metis Global Partners, LLC | 14,304 | $1.21M | 0.03% | −834−5.5% | Reduced |
| Voya Financial Advisors, Inc. | 14,392 | $1.21M | 0.12% | −1,146−7.4% | Reduced |
| CWM, LLC | 14,377 | $1.21M | 0.00% | +5,986+71.3% | Added |
| Dark Forest Capital Management LP | 14,497 | $1.22M | 0.05% | −8,156−36.0% | Reduced |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 15,154 | $1.28M | 0.00% | −974−6.0% | Reduced |
| Walleye Capital LLC | 15,362 | $1.30M | 0.01% | +8,055+110.2% | Added |
| Benjamin Edwards Inc | 15,378 | $1.30M | 0.01% | +5,944+63.0% | Added |
| Tokio Marine Asset Management Co Ltd | 15,427 | $1.30M | 0.05% | +475+3.2% | Added |
| Conestoga Capital Advisors, LLC | 15,540 | $1.31M | 0.02% | +50+0.3% | Added |
| SRS Capital Advisors, Inc. | 15,650 | $1.32M | 0.02% | +4,725+43.2% | Added |
| Redmond Asset Management, LLC | 15,742 | $1.33M | 0.33% | −65−0.4% | Reduced |
| RMR Wealth Builders | 16,036 | $1.35M | 0.11% | +2,148+15.5% | Added |
| Allstate Corp | 16,098 | $1.36M | 0.03% | +16,098 | New |
| BI Asset Management Fondsmaeglerselskab A/S | 16,264 | $1.37M | 0.01% | +105+0.6% | Added |
| Institute for Wealth Management, LLC. | 16,267 | $1.37M | 0.14% | −450−2.7% | Reduced |
| Mirabella Financial Services LLP | 16,340 | $1.38M | 0.12% | +10,007+158.0% | Added |
| Waterway Wealth Management, LLC | 16,649 | $1.40M | 0.34% | +1,849+12.5% | Added |
| Norden Group LLC | 16,894 | $1.43M | 0.14% | +277+1.7% | Added |
| Main Management ETF Advisors, LLC | 17,050 | $1.44M | 0.05% | +17,050 | New |
| Omers Administration Corp | 17,087 | $1.44M | 0.01% | −18,906−52.5% | Reduced |
| M&T Bank Corp | 17,252 | $1.46M | 0.00% | −3,716−17.7% | Reduced |
| Dai-Ichi Life Insurance Company, Ltd | 17,377 | $1.47M | 0.04% | −1,048−5.7% | Reduced |
| Oak Thistle LLC | 17,714 | $1.49M | 0.23% | +13,400+310.6% | Added |
| Ameritas Investment Partners, Inc. | 17,991 | $1.52M | 0.05% | +176+1.0% | Added |
| Commerce Bank | 18,221 | $1.54M | 0.01% | +88+0.5% | Added |
| Tower Research Capital LLC (TRC) | 18,357 | $1.55M | 0.04% | −4,096−18.2% | Reduced |
| USA Financial Portformulas Corp | 18,757 | $1.58M | 0.28% | +18,757 | New |
| Bessemer Group Inc | 18,772 | $1.58M | 0.00% | +2,029+12.1% | Added |
| Kestra Advisory Services, LLC | 18,943 | $1.60M | 0.01% | +3,371+21.6% | Added |
| New Mexico Educational Retirement Board | 19,100 | $1.61M | 0.05% | −100−0.5% | Reduced |
| Keybank National Association | 19,278 | $1.63M | 0.01% | +1,910+11.0% | Added |
| Quotient Wealth Partners, LLC | 19,293 | $1.63M | 0.04% | −1,554−7.5% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 19,343 | $1.63M | 0.01% | +1,386+7.7% | Added |
| XTX Topco Ltd | 19,411 | $1.64M | 0.09% | −14,222−42.3% | Reduced |
| Virtus Investment Advisers, Inc. | 19,623 | $1.66M | 0.47% | +19,623 | New |
| B.O.S.S. Retirement Advisors, LLC | 19,714 | $1.66M | 0.40% | −1,188−5.7% | Reduced |
| Toroso Investments, LLC | 19,814 | $1.67M | 0.01% | +4,976+33.5% | Added |
| Investment Management Corp of Ontario | 19,820 | $1.67M | 0.03% | +6,443+48.2% | Added |
| Graham Capital Management, L.P. | 20,024 | $1.69M | 0.06% | +20,024 | New |