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 |
|---|---|---|---|---|---|
| Merit Financial Group, LLC | 39,432 | $1.12M | 0.01% | +26,531+205.7% | Added |
| Advisor Group Holdings, Inc. | 38,973 | $1.10M | 0.00% | +8,470+27.8% | Added |
| Assetmark, Inc | 38,892 | $1.10M | 0.00% | +25,532+191.1% | Added |
| UniSuper Management Pty Ltd | 38,884 | $1.10M | 0.01% | −14,783−27.5% | Reduced |
| Walleye Trading LLC | 37,613 | $1.07M | 0.01% | −34,896−48.1% | Reduced |
| Nomura Holdings Inc | 37,436 | $1.06M | 0.00% | +31,714+554.2% | Added |
| Capital International Inc | 37,047 | $1.05M | 0.01% | +17,724+91.7% | Added |
| Scotia Capital Inc. | 36,646 | $1.04M | 0.00% | +1,581+4.5% | Added |
| Regions Financial Corp | 36,601 | $1.04M | 0.01% | −4,915−11.8% | Reduced |
| BI Asset Management Fondsmaeglerselskab A/S | 36,355 | $1.03M | 0.01% | +32,903+953.2% | Added |
| Cambridge Investment Research Advisors, Inc. | 36,155 | $1.02M | 0.00% | −676−1.8% | Reduced |
| Sanctuary Advisors, LLC | 36,059 | $1.02M | 0.00% | −1,241−3.3% | Reduced |
| Brighton Jones LLC | 35,127 | $994.8K | 0.02% | +23,632+205.6% | Added |
| Liontrust Investment Partners LLP | 35,058 | $992.8K | 0.01% | 00.0% | Unchanged |
| Vident Advisory, LLC | 34,898 | $988.3K | 0.01% | +19,870+132.2% | Added |
| Formula Growth Ltd | 34,000 | $962.9K | 0.34% | 00.0% | Unchanged |
| AE Wealth Management LLC | 33,896 | $959.9K | 0.00% | +14,065+70.9% | Added |
| Barbara Oil Co. | 32,000 | $947.5K | 0.32% | 00.0% | Unchanged |
| Summit Trail Advisors, LLC | 33,067 | $936.5K | 0.01% | +9,282+39.0% | Added |
| Pacer Advisors, Inc. | 32,881 | $931.0K | 0.00% | −14,211−30.2% | Reduced |
| Truist Financial Corp | 32,555 | $921.9K | 0.00% | −18,563−36.3% | Reduced |
| QRG Capital Management, Inc. | 32,305 | $914.9K | 0.01% | +1,366+4.4% | Added |
| EagleClaw Capital Managment, LLC | 32,250 | $913.3K | 0.12% | −1,500−4.4% | Reduced |
| Gulf International Bank (UK) Ltd | 32,261 | $913.0K | 0.02% | −590−1.8% | Reduced |
| Knollwood Investment Advisory, LLC | 32,150 | $910.5K | 0.08% | −9,713−23.2% | Reduced |
| Ethic Inc. | 31,997 | $906.2K | 0.01% | +5,363+20.1% | Added |
| Mizuho Securities USA LLC | 31,970 | $905.4K | 0.01% | +6,348+24.8% | Added |
| Bleakley Financial Group, LLC | 31,524 | $892.8K | 0.01% | +31,524 | New |
| Kornitzer Capital Management Inc | 31,101 | $880.8K | 0.02% | −176,665−85.0% | Reduced |
| Tower Research Capital LLC (TRC) | 30,993 | $877.7K | 0.02% | −39,023−55.7% | Reduced |
| Portside Wealth Group, LLC | 30,382 | $860.4K | 0.10% | −7,146−19.0% | Reduced |
| Chilton Investment Co LLC | 30,320 | $858.7K | 0.02% | +30,320 | New |
| Papp L Roy & Associates | 29,990 | $849.3K | 0.09% | −2,899−8.8% | Reduced |
| Saudi Central Bank | 29,386 | $832.2K | 0.01% | +13,742+87.8% | Added |
| Personal Cfo Solutions, LLC | 29,084 | $823.7K | 0.12% | −5,501−15.9% | Reduced |
| D.A. Davidson & Co. | 28,891 | $818.2K | 0.00% | −2,337−7.5% | Reduced |
| B. Metzler seel. Sohn & Co. AG | 28,620 | $810.5K | 0.01% | −2,037−6.6% | Reduced |
| Mattern Capital Management, LLC | 28,450 | $805.7K | 0.09% | +8,705+44.1% | Added |
| Alps Advisors Inc | 28,261 | $800.4K | 0.00% | +4,615+19.5% | Added |
| Eurizon Capital SGR S.p.A. | 28,014 | $795.0K | 0.00% | −14,023−33.4% | Reduced |
| Janney Montgomery Scott LLC | 27,730 | $785.0K | 0.00% | +1,245+4.7% | Added |
| Chicago Partners Investment Group LLC | 28,290 | $767.8K | 0.02% | +10,336+57.6% | Added |
| Pallas Capital Advisors LLC | 26,889 | $761.5K | 0.02% | +19,452+261.6% | Added |
| Investment Management Corp of Ontario | 26,769 | $758.1K | 0.01% | −3,600−11.9% | Reduced |
| Harbor Advisors LLC | 26,560 | $752.2K | 0.09% | 00.0% | Unchanged |
| Pacific Capital Partners Ltd | 26,559 | $752.2K | 0.65% | +9,259+53.5% | Added |
| Schroder Investment Management Group | 26,418 | $748.2K | 0.00% | −5,719−17.8% | Reduced |
| Kentucky Retirement Systems | 26,362 | $746.6K | 0.02% | +26,362 | New |
| Diversify Wealth Management, LLC | 25,570 | $745.9K | 0.01% | +5,994+30.6% | Added |
| Diversify Advisory Services, LLC | 25,570 | $745.9K | 0.01% | +25,570 | New |
| First Trust Advisors LP | 26,261 | $743.7K | 0.00% | −812,783−96.9% | Reduced |
| Parallel Advisors, LLC | 26,257 | $743.6K | 0.01% | +5,911+29.1% | Added |
| Prudential PLC | 26,124 | $739.8K | 0.01% | 00.0% | Unchanged |
| Malaga Cove Capital, LLC | 26,083 | $738.7K | 0.24% | −3,357−11.4% | Reduced |
| Neuberger Berman Group LLC | 25,948 | $734.8K | 0.00% | −35,154−57.5% | Reduced |
| Bridgefront Capital, LLC | 25,853 | $732.2K | 0.19% | +15,048+139.3% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 25,530 | $723.0K | 0.00% | −111,197−81.3% | Reduced |
| Guidance Capital, Inc | 23,566 | $715.7K | 0.15% | +2,552+12.1% | Added |
| Cresset Asset Management, LLC | 25,258 | $715.3K | 0.00% | +15,287+153.3% | Added |
| Quadrature Capital Ltd | 25,018 | $708.5K | 0.01% | +25,018 | New |
| Badgley Phelps Wealth Managers, LLC | 24,944 | $706.4K | 0.01% | −12,150−32.8% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 24,815 | $701.6K | 0.00% | −3,639−12.8% | Reduced |
| Norinchukin Bank, The | 24,748 | $700.9K | 0.01% | −15,916−39.1% | Reduced |
| Stephens Inc | 24,619 | $697.2K | 0.01% | −18,029−42.3% | Reduced |
| Grantham, Mayo, Van Otterloo & Co. LLC | 24,564 | $695.7K | 0.00% | +24,564 | New |
| SlateStone Wealth, LLC | 24,538 | $695.0K | 0.05% | −6,227−20.2% | Reduced |
| Wealthfront Advisers LLC | 24,534 | $694.8K | 0.00% | +3,598+17.2% | Added |
| Allianz Asset Management GmbH | 24,475 | $693.1K | 0.00% | −3,526−12.6% | Reduced |
| Lido Advisors, LLC | 24,465 | $692.9K | 0.00% | +10,164+71.1% | Added |
| United Capital Financial Advisers, LLC | 24,222 | $686.0K | 0.00% | +13,659+129.3% | Added |
| Oak Thistle LLC | 24,165 | $684.4K | 0.07% | −60,702−71.5% | Reduced |
| Park Avenue Securities LLC | 24,161 | $684.0K | 0.00% | +2,998+14.2% | Added |
| Crossmark Global Holdings, Inc. | 24,026 | $680.4K | 0.01% | +597+2.5% | Added |
| Krilogy Financial LLC | 24,016 | $680.1K | 0.02% | +24,016 | New |
| Magnetar Financial LLC | 23,806 | $674.2K | 0.01% | +14,017+143.2% | Added |
| Spire Wealth Management | 23,713 | $671.8K | 0.02% | +23,210+4,614.3% | Added |
| Dynamic Technology Lab Private Ltd | 23,651 | $670.0K | 0.15% | +7,098+42.9% | Added |
| Verdence Capital Advisors LLC | 23,556 | $667.1K | 0.04% | −20,368−46.4% | Reduced |
| M&T Bank Corp | 23,555 | $666.2K | 0.00% | +2,854+13.8% | Added |
| Fox Run Management, L.L.C. | 23,520 | $666.1K | 0.11% | +18,172+339.8% | Added |
| Board of the Pension Protection Fund | 23,500 | $665.5K | 0.63% | +23,500 | New |
| Allspring Global Investments Holdings, LLC | 22,420 | $658.3K | 0.00% | +4,120+22.5% | Added |
| Patten & Patten Inc | 22,522 | $637.8K | 0.03% | +13,775+157.5% | Added |
| Hartford Investment Management Co | 22,424 | $635.0K | 0.02% | −1,859−7.7% | Reduced |
| Principal Securities, Inc. | 22,269 | $630.7K | 0.01% | −10,176−31.4% | Reduced |
| MAI Capital Management | 21,915 | $620.6K | 0.00% | +17,942+451.6% | Added |
| Tokio Marine Asset Management Co Ltd | 21,912 | $620.5K | 0.02% | +2,142+10.8% | Added |
| EntryPoint Capital, LLC | 21,757 | $616.2K | 0.15% | +1,969+10.0% | Added |
| Candriam Luxembourg S.C.A. | 21,565 | $610.1K | 0.00% | +53+0.2% | Added |
| Atom Investors LP | 21,342 | $604.4K | 0.05% | −19,056−47.2% | Reduced |
| Maryland State Retirement & Pension System | 21,232 | $601.3K | 0.01% | 00.0% | Unchanged |
| New Mexico Educational Retirement Board | 21,100 | $598.0K | 0.02% | +1,500+7.7% | Added |
| Louisiana State Employees Retirement System | 20,900 | $591.9K | 0.01% | −28,300−57.5% | Reduced |
| Three Seasons Wealth, LLC | 20,828 | $589.8K | 0.05% | −5,816−21.8% | Reduced |
| Institute for Wealth Management, LLC. | 20,026 | $567.1K | 0.05% | −1,115−5.3% | Reduced |
| JBF Capital, Inc. | 20,000 | $566.4K | 0.07% | +20,000 | New |
| Frec Markets, Inc. | 19,877 | $562.9K | 0.05% | +19,877 | New |
| 111 Capital | 19,729 | $558.7K | 0.10% | +9,726+97.2% | Added |
| Bull Harbor Capital LLC | 19,692 | $557.7K | 0.11% | +19,692 | New |
| Banque Cantonale Vaudoise | 19,567 | $554.0K | 0.02% | +5,540+39.5% | Added |