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 |
|---|---|---|---|---|---|
| Czech National Bank | 116,234 | $3.29M | 0.02% | +808+0.7% | Added |
| HighTower Advisors, LLC | 115,385 | $3.27M | 0.00% | −8,799−7.1% | Reduced |
| Dash Acquisitions Inc. | 105,578 | $3.22M | 0.65% | +1,201+1.2% | Added |
| State of Michigan Retirement System | 113,300 | $3.21M | 0.01% | −3,200−2.7% | Reduced |
| IFM Investors Pty Ltd | 112,204 | $3.18M | 0.02% | +26,535+31.0% | Added |
| National Bank of Canada | 112,074 | $3.17M | 0.00% | +66,577+146.3% | Added |
| North Star Asset Management Inc | 112,073 | $3.17M | 0.12% | +57,651+105.9% | Added |
| Havemeyer Place LP | 112,057 | $3.17M | 0.31% | +40,992+57.7% | Added |
| Night Owl Capital Management, LLC | 110,871 | $3.14M | 0.33% | +1,627+1.5% | Added |
| Wealth Enhancement Advisory Services, LLC | 123,138 | $3.14M | 0.01% | +84,559+219.2% | Added |
| Victory Capital Management Inc | 109,905 | $3.11M | 0.00% | −225,528−67.2% | Reduced |
| Ivy Lane Capital Management, LLC | 105,000 | $2.97M | 4.31% | +46,000+78.0% | Added |
| Headlands Technologies LLC | 104,978 | $2.97M | 0.32% | +69,550+196.3% | Added |
| Buttonwood Financial Advisors Inc. | 103,911 | $2.94M | 0.90% | +39,279+60.8% | Added |
| Acadian Asset Management LLC | 101,494 | $2.87M | 0.00% | +101,494 | New |
| CIBC Asset Management Inc | 98,877 | $2.80M | 0.01% | −78,202−44.2% | Reduced |
| Engineers Gate Manager LP | 97,924 | $2.77M | 0.04% | +97,924 | New |
| MetLife Investment Management | 95,047 | $2.69M | 0.01% | −6,214−6.1% | Reduced |
| Elo Mutual Pension Insurance Co | 94,422 | $2.67M | 0.03% | +94,422 | New |
| Graham Capital Management, L.P. | 93,689 | $2.65M | 0.07% | +72,329+338.6% | Added |
| Bank of Nova Scotia | 93,291 | $2.65M | 0.00% | −1,194−1.3% | Reduced |
| Daiwa Securities Group Inc. | 93,377 | $2.64M | 0.01% | −38,525−29.2% | Reduced |
| MML Investors Services, LLC | 93,204 | $2.64M | 0.01% | +12,967+16.2% | Added |
| Mirae Asset Global Investments Co., Ltd. | 92,612 | $2.62M | 0.01% | −135,068−59.3% | Reduced |
| Fayez Sarofim & Co | 91,531 | $2.59M | 0.01% | −283,044−75.6% | Reduced |
| Odyssean, LLC | 90,524 | $2.56M | 0.42% | +90,524 | New |
| Boston Private Wealth LLC | 90,226 | $2.56M | 0.16% | −5,834−6.1% | Reduced |
| Woodline Partners LP | 89,781 | $2.54M | 0.01% | +6,768+8.2% | Added |
| Gilder Gagnon Howe & Co LLC | 88,480 | $2.51M | 0.03% | −2,614−2.9% | Reduced |
| Ashford Capital Management Inc | 88,100 | $2.49M | 0.27% | −14,390−14.0% | Reduced |
| CWM Advisors, LLC | 87,593 | $2.48M | 0.10% | +17,248+24.5% | Added |
| KBC Group NV | 86,623 | $2.45M | 0.01% | −5,160−5.6% | Reduced |
| Retirement Systems of Alabama | 85,786 | $2.43M | 0.01% | −4,214−4.7% | Reduced |
| Brinker Capital Investments, LLC | 84,695 | $2.40M | 0.02% | +36,249+74.8% | Added |
| SEB Asset Management AB | 84,428 | $2.39M | 0.01% | +1,035+1.2% | Added |
| Linden Thomas Advisory Services, LLC | 83,079 | $2.35M | 0.19% | +17,020+25.8% | Added |
| Captrust Financial Advisors | 82,161 | $2.33M | 0.00% | +30,810+60.0% | Added |
| CI Private Wealth, LLC | 81,676 | $2.31M | 0.00% | +2,275+2.9% | Added |
| Voya Investment Management LLC | 81,010 | $2.29M | 0.00% | −3,533−4.2% | Reduced |
| Fifth Third Bancorp | 79,154 | $2.24M | 0.00% | −1,584−2.0% | Reduced |
| ProShare Advisors LLC | 77,813 | $2.20M | 0.00% | −533,470−87.3% | Reduced |
| Red Spruce Capital, LLC | 76,448 | $2.17M | 0.75% | +38,413+101.0% | Added |
| Xponance, Inc. | 74,495 | $2.11M | 0.01% | −2,036−2.7% | Reduced |
| Amalgamated Bank | 71,562 | $2.03M | 0.01% | −6,788−8.7% | Reduced |
| State of Tennessee, Treasury Department | 71,540 | $2.03M | 0.01% | −42,803−37.4% | Reduced |
| CenterBook Partners LP | 71,443 | $2.02M | 0.10% | +71,443 | New |
| HB Wealth Management, LLC | 71,357 | $2.02M | 0.01% | +4,900+7.4% | Added |
| Rakuten Investment Management, Inc. | 68,040 | $1.99M | 0.01% | −20,276−23.0% | Reduced |
| Quantitative Investment Management, LLC | 69,418 | $1.97M | 0.21% | −2,298−3.2% | Reduced |
| Federation des caisses Desjardins du Quebec | 68,890 | $1.95M | 0.01% | +24,849+56.4% | Added |
| Toroso Investments, LLC | 68,552 | $1.94M | 0.00% | +43,798+176.9% | Added |
| Delta Global Management LP | 68,094 | $1.93M | 0.21% | +68,094 | New |
| Thrivent Financial for Lutherans | 66,863 | $1.89M | 0.00% | +30,747+85.1% | Added |
| The PNC Financial Services Group, Inc. | 66,753 | $1.89M | 0.00% | −17,937−21.2% | Reduced |
| Numerai GP LLC | 66,218 | $1.88M | 0.15% | +21,999+49.8% | Added |
| Bastion Asset Management Inc. | 67,716 | $1.87M | 0.63% | +67,716 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 64,910 | $1.84M | 0.00% | −226,785−77.7% | Reduced |
| Employees Retirement System of Texas | 63,224 | $1.79M | 0.01% | 00.0% | Unchanged |
| Quantbot Technologies LP | 62,491 | $1.77M | 0.07% | +51,436+465.3% | Added |
| British Columbia Investment Management Corp | 62,411 | $1.77M | 0.01% | +4,009+6.9% | Added |
| Police & Firemen's Retirement System of New Jersey | 61,928 | $1.75M | 0.01% | −2,204−3.4% | Reduced |
| Utah Retirement Systems | 61,351 | $1.74M | 0.02% | −6,437−9.5% | Reduced |
| Atria Investments LLC | 61,179 | $1.73M | 0.02% | −20,642−25.2% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 60,063 | $1.70M | 0.01% | +2,580+4.5% | Added |
| Robeco Institutional Asset Management B.V. | 57,913 | $1.64M | 0.00% | +11,895+25.8% | Added |
| Swiss Life Asset Management Ltd | 57,625 | $1.63M | 0.01% | +8,906+18.3% | Added |
| Nissay Asset Management Corp | 56,761 | $1.61M | 0.01% | −61,176−51.9% | Reduced |
| New York Life Investment Management LLC | 56,711 | $1.61M | 0.01% | −1,975−3.4% | Reduced |
| Allianz SE | 56,052 | $1.59M | 0.02% | 00.0% | Unchanged |
| Sequoia Financial Advisors, LLC | 54,883 | $1.55M | 0.01% | +3,195+6.2% | Added |
| Everence Capital Management Inc | 54,382 | $1.54M | 0.08% | +35,648+190.3% | Added |
| Skylands Capital, LLC | 52,150 | $1.48M | 0.18% | +20,100+62.7% | Added |
| Gsa Capital Partners LLP | 51,986 | $1.47M | 0.09% | +25,036+92.9% | Added |
| Itau Unibanco Holding S.A. | 51,607 | $1.46M | 0.03% | −932−1.8% | Reduced |
| Occudo Quantitative Strategies LP | 51,329 | $1.45M | 0.08% | +51,329 | New |
| SG Americas Securities, LLC | 51,113 | $1.45M | 0.00% | −221,234−81.2% | Reduced |
| Rothschild Investment LLC | 50,882 | $1.44M | 0.05% | +49,580+3,808.0% | Added |
| Rafferty Asset Management, LLC | 50,821 | $1.44M | 0.00% | −256,325−83.5% | Reduced |
| Oregon Public Employees Retirement Fund | 50,224 | $1.42M | 0.02% | +1,700+3.5% | Added |
| Wellington Management Group LLP | 50,070 | $1.42M | 0.00% | +1,157+2.4% | Added |
| Axq Capital, LP | 49,543 | $1.40M | 0.15% | +19,078+62.6% | Added |
| OP Asset Management Ltd | 48,694 | $1.38M | 0.01% | +5,310+12.2% | Added |
| SRS Capital Advisors, Inc. | 47,374 | $1.34M | 0.01% | +36,944+354.2% | Added |
| Nordea Investment Management AB | 46,572 | $1.32M | 0.00% | −40,658−46.6% | Reduced |
| US Bancorp | 45,979 | $1.30M | 0.00% | −13,314−22.5% | Reduced |
| Hahn Capital Management LLC | 44,884 | $1.27M | 0.77% | −1,563−3.4% | Reduced |
| Macquarie Group Ltd | 44,296 | $1.25M | 0.01% | +5,300+13.6% | Added |
| Virtu Financial LLC | 44,013 | $1.25M | 0.04% | +44,013 | New |
| JustInvest LLC | 43,870 | $1.24M | 0.01% | +14,141+47.6% | Added |
| Machina Capital S.A.S. | 42,412 | $1.20M | 0.19% | +42,412 | New |
| National Pension Service | 42,241 | $1.20M | 0.00% | −660,437−94.0% | Reduced |
| Yousif Capital Management, LLC | 42,090 | $1.19M | 0.01% | −592−1.4% | Reduced |
| Mutual of America Capital Management LLC | 42,054 | $1.19M | 0.01% | −3,024−6.7% | Reduced |
| Picton Mahoney Asset Management | 40,904 | $1.16M | 0.01% | +40,904 | New |
| Public Employees Retirement Association of Colorado | 40,563 | $1.15M | 0.00% | −141,100−77.7% | Reduced |
| Dark Forest Capital Management LP | 40,369 | $1.14M | 0.07% | +40,369 | New |
| State of Alaska, Department of Revenue | 40,012 | $1.13M | 0.01% | −1,874−4.5% | Reduced |
| Platinum Investment Management Ltd | 40,000 | $1.13M | 0.28% | −37,500−48.4% | Reduced |
| Potomac Capital Management, Inc. | 40,000 | $1.13M | 0.83% | +28,000+233.3% | Added |
| PensionDanmark Pensionsforsikringsaktieselskab | 39,466 | $1.12M | 0.01% | −98,500−71.4% | Reduced |