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, Q2 2026
Institutional positions in Costar Group, Inc. as of Jun 30, 2026. 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
- 760
- −28 vs. Q1 2026
- Shares held
- 414.0M
- +5.90M (+1.4%) vs. Q1 2026
- Total value
- $11.7B
- −$4.74B (−28.8%) vs. Q1 2026
- New holders
- 115
- 303 more added
- Sold out
- 143
- 266 more reduced
9 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| STRS Ohio | 9,724 | $275.4K | 0.00% | −71,264−88.0% | Reduced |
| R Squared Ltd | 9,562 | $270.8K | 0.14% | +9,562 | New |
| Mather Group, LLC. | 9,524 | $269.7K | 0.00% | +7,354+338.9% | Added |
| Counterpoint Mutual Funds LLC | 9,365 | $265.2K | 0.03% | +9,365 | New |
| Balyasny Asset Management LLC | 9,349 | $264.8K | 0.00% | +3,023+47.8% | Added |
| Hills Bank & Trust Co | 9,345 | $264.6K | 0.01% | −89−0.9% | Reduced |
| New Age Alpha Advisors, LLC | 9,331 | $264.3K | 0.01% | −34,331−78.6% | Reduced |
| GraniteShares Advisors LLC | 9,293 | $263.2K | 0.17% | +9,293 | New |
| Ostrum Asset Management | 9,234 | $261.5K | 0.01% | +4,463+93.5% | Added |
| PFG Investments, LLC | 9,091 | $257.5K | 0.01% | +9,091 | New |
| Blueshift Asset Management, LLC | 9,017 | $255.4K | 0.06% | +2,032+29.1% | Added |
| Essential Partners LLC | 9,008 | $255.1K | 0.12% | +8,914+9,483.0% | Added |
| Connable Office Inc | 9,000 | $254.9K | 0.02% | 00.0% | Unchanged |
| Laird Norton Trust Company, LLC | 8,998 | $254.8K | 0.00% | −195−2.1% | Reduced |
| Vestcor Inc | 8,956 | $254.0K | 0.01% | 00.0% | Unchanged |
| Penserra Capital Management LLC | 9,017 | $253.0K | 0.00% | +3,130+53.2% | Added |
| Tema ETFs LLC | 8,914 | $252.4K | 0.01% | +1,378+18.3% | Added |
| Caitong International Asset Management Co., Ltd | 8,810 | $249.5K | 0.03% | −4,489−33.8% | Reduced |
| Empirical Finance, LLC | 8,770 | $248.4K | 0.01% | +545+6.6% | Added |
| Perigon Wealth Management, LLC | 8,716 | $246.8K | 0.00% | +2,619+43.0% | Added |
| Hantz Financial Services, Inc. | 8,689 | $246.0K | 0.00% | +3,905+81.6% | Added |
| Nicolet Bankshares Inc | 8,442 | $242.3K | 0.01% | −1,353−13.8% | Reduced |
| Plato Investment Management Ltd | 8,565 | $241.1K | 0.01% | 00.0% | Unchanged |
| Potomac Fund Management Inc | 8,451 | $239.3K | 0.01% | −936−10.0% | Reduced |
| Castleview Partners, LLC | 8,398 | $237.8K | 0.10% | +386+4.8% | Added |
| Fideuram - Intesa Sanpaolo Private Banking S.P.A. | 8,346 | $236.4K | 0.01% | +2,847+51.8% | Added |
| Stevens Capital Management LP | 8,321 | $236.0K | 0.06% | +8,321 | New |
| Banco Bilbao Vizcaya Argentaria, S.A. | 8,312 | $235.9K | 0.00% | −5,305−39.0% | Reduced |
| Rockefeller Capital Management L.P. | 8,322 | $235.7K | 0.00% | +2,251+37.1% | Added |
| V-Square Quantitative Management LLC | 8,267 | $234.1K | 0.02% | +2,062+33.2% | Added |
| GTS Securities LLC | 7,889 | $223.4K | 0.00% | +1,903+31.8% | Added |
| Panagora Asset Management Inc | 7,808 | $221.1K | 0.00% | +7,808 | New |
| Mount Yale Investment Advisors, LLC | 7,721 | $218.7K | 0.00% | +7,721 | New |
| VestGen Advisors, LLC | 7,704 | $218.2K | 0.01% | +7,704 | New |
| Vontobel Holding Ltd. | 7,690 | $217.8K | 0.00% | +1,400+22.3% | Added |
| GAMMA Investing LLC | 7,605 | $215.4K | 0.01% | −1,362−15.2% | Reduced |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | 7,425 | $210.3K | 0.06% | +7,425 | New |
| Chicago Trust Co NA | 7,390 | $209.3K | 0.03% | −750−9.2% | Reduced |
| Syon Capital LLC | 7,326 | $207.5K | 0.01% | +1,526+26.3% | Added |
| Baker Tilly Wealth Management, LLC | 7,317 | $207.2K | 0.04% | +1,242+20.4% | Added |
| Beese Fulmer Investment Management, Inc. | 7,259 | $205.6K | 0.01% | +7,259 | New |
| TCG Advisory Services, LLC | 7,251 | $205.3K | 0.00% | +7,251 | New |
| Icon Wealth Advisors, LLC | 7,217 | $204.4K | 0.01% | −296−3.9% | Reduced |
| EverSource Wealth Advisors, LLC | 7,157 | $202.7K | 0.01% | +4,436+163.0% | Added |
| Nisa Investment Advisors, LLC | 7,055 | $199.8K | 0.00% | −35,569−83.4% | Reduced |
| Larson Financial Group LLC | 6,918 | $195.9K | 0.01% | −6,667−49.1% | Reduced |
| Caden Capital Partners, LP | 6,821 | $193.2K | 2.33% | +2,000+41.5% | Added |
| State of Wyoming | 6,779 | $192.0K | 0.02% | +6,779 | New |
| Blue Sparrow, LLC | 6,160 | $174.5K | 0.00% | 00.0% | Unchanged |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 6,127 | $173.5K | 0.00% | −14,477−70.3% | Reduced |
| Siemens Fonds Invest GmbH | 5,942 | $168.3K | 0.01% | 00.0% | Unchanged |
| Umb Bank N A | 5,784 | $163.8K | 0.00% | −8,685−60.0% | Reduced |
| Farther Finance Advisors, LLC | 5,711 | $162.0K | 0.00% | +3,161+124.0% | Added |
| Parkside Financial Bank & Trust | 4,935 | $139.8K | 0.01% | +679+16.0% | Added |
| Prestige Wealth Management Group LLC | 4,603 | $130.4K | 0.02% | −1,423−23.6% | Reduced |
| Global Retirement Partners, LLC | 4,451 | $126.1K | 0.00% | +4,451 | New |
| Canada Post Corp Registered Pension Plan | 4,170 | $118.1K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 3,968 | $112.4K | 0.00% | +2,361+146.9% | Added |
| Group One Trading, L.P. | 3,849 | $109.0K | 0.00% | +3,849 | New |
| Ameritas Investment Partners, Inc. | 3,643 | $103.2K | 0.00% | −15,387−80.9% | Reduced |
| Smartleaf Asset Management LLC | 3,453 | $101.3K | 0.00% | 00.0% | Unchanged |
| Harbor Investment Advisory, LLC | 3,570 | $101.1K | 0.01% | −725−16.9% | Reduced |
| Versant Capital Management, Inc | 3,431 | $97.2K | 0.01% | +2,384+227.7% | Added |
| True Wealth Design, LLC | 3,179 | $90.0K | 0.02% | +2,423+320.5% | Added |
| Cullen/Frost Bankers, Inc. | 3,098 | $87.7K | 0.00% | +1,822+142.8% | Added |
| Towarzystwo Funduszy Inwestycyjnych Pzu SA | 2,900 | $82.1K | 0.02% | 00.0% | Unchanged |
| Generali Asset Management SPA SGR | 2,764 | $78.3K | 0.00% | −453−14.1% | Reduced |
| Signaturefd, LLC | 2,725 | $77.2K | 0.00% | −239−8.1% | Reduced |
| Oslo Pensjonsforsikring AS | 2,309 | $65.4K | 0.01% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 2,243 | $63.5K | 0.00% | +166+8.0% | Added |
| Livforsakringsbolaget Skandia, Omsesidigt | 2,100 | $59.4K | 0.00% | 00.0% | Unchanged |
| WealthCollab, LLC | 2,000 | $56.6K | 0.02% | +1,500+300.0% | Added |
| Los Angeles Capital Management LLC | 1,946 | $55.1K | 0.00% | 00.0% | Unchanged |
| Whittier Trust Co | 1,783 | $51.2K | 0.00% | +33+1.9% | Added |
| Delta Asset Management LLC | 1,760 | $49.8K | 0.00% | 00.0% | Unchanged |
| Pin Oak Investment Advisors Inc | 1,672 | $47.0K | 0.03% | 00.0% | Unchanged |
| GW&K Investment Management, LLC | 1,623 | $46.0K | 0.00% | +997+159.3% | Added |
| Leonteq Securities AG | 1,457 | $41.3K | 0.00% | −3,286−69.3% | Reduced |
| ORG Wealth Partners, LLC | 1,394 | $39.5K | 0.01% | −6,103−81.4% | Reduced |
| HighMark Wealth Management LLC | 1,296 | $36.7K | 0.01% | 00.0% | Unchanged |
| Eurizon SLJ Capital Ltd | 1,279 | $36.2K | 0.01% | 00.0% | Unchanged |
| Abound Wealth Management | 1,272 | $36.0K | 0.01% | +11+0.9% | Added |
| University of Texas/Texas Am Investment Managment Co | 1,169 | $33.1K | 0.00% | +1,169 | New |
| Transamerica Financial Advisors, Inc. | 1,156 | $32.7K | 0.00% | +288+33.2% | Added |
| Exchange Traded Concepts, LLC | 1,151 | $32.6K | 0.00% | −83,298−98.6% | Reduced |
| Onefund, LLC | 1,112 | $31.5K | 0.02% | −53−4.5% | Reduced |
| Winthrop Capital Management, LLC | 1,087 | $31.0K | 0.01% | +18+1.7% | Added |
| Pinnacle Wealth Planning Services, Inc. | 1,065 | $30.2K | 0.00% | +755+243.5% | Added |
| Salomon & Ludwin, LLC | 868 | $25.5K | 0.00% | +449+107.2% | Added |
| Bank Julius Baer & Co. Ltd, Zurich | 880 | $24.9K | 0.00% | 00.0% | Unchanged |
| Financial Consulate, Inc | 877 | $24.8K | 0.00% | −857−49.4% | Reduced |
| EFG International AG | 865 | $24.5K | 0.00% | 00.0% | Unchanged |
| Zions Bancorporation, National Association | 773 | $21.9K | 0.00% | +41+5.6% | Added |
| Caldwell Sutter Capital, Inc. | 696 | $19.7K | 0.01% | +696 | New |
| Fulcrum Asset Management LLP | 656 | $19.2K | 0.00% | +656 | New |
| Kayne Anderson Rudnick Investment Management LLC | 661 | $18.7K | 0.00% | −231−25.9% | Reduced |
| Raiffeisen Bank International AG | 629 | $18.4K | 0.00% | +334+113.2% | Added |
| HFM Investment Advisors, LLC | 645 | $18.3K | 0.01% | +8+1.3% | Added |
| Bryn Mawr Trust Co | 640 | $18.1K | 0.00% | 00.0% | Unchanged |
| Twin Lakes Capital Management, LLC | 598 | $16.9K | 0.01% | −21−3.4% | Reduced |