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 |
|---|---|---|---|---|---|
| British Columbia Investment Management Corp | 62,411 | $1.77M | 0.01% | +4,009+6.9% | Added |
| Quantbot Technologies LP | 62,491 | $1.77M | 0.07% | +51,436+465.3% | Added |
| Employees Retirement System of Texas | 63,224 | $1.79M | 0.01% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 64,910 | $1.84M | 0.00% | −226,785−77.7% | Reduced |
| Bastion Asset Management Inc. | 67,716 | $1.87M | 0.63% | +67,716 | New |
| Numerai GP LLC | 66,218 | $1.88M | 0.15% | +21,999+49.8% | Added |
| The PNC Financial Services Group, Inc. | 66,753 | $1.89M | 0.00% | −17,937−21.2% | Reduced |
| Thrivent Financial for Lutherans | 66,863 | $1.89M | 0.00% | +30,747+85.1% | Added |
| Delta Global Management LP | 68,094 | $1.93M | 0.21% | +68,094 | New |
| Toroso Investments, LLC | 68,552 | $1.94M | 0.00% | +43,798+176.9% | Added |
| Federation des caisses Desjardins du Quebec | 68,890 | $1.95M | 0.01% | +24,849+56.4% | Added |
| Quantitative Investment Management, LLC | 69,418 | $1.97M | 0.21% | −2,298−3.2% | Reduced |
| Rakuten Investment Management, Inc. | 68,040 | $1.99M | 0.01% | −20,276−23.0% | Reduced |
| HB Wealth Management, LLC | 71,357 | $2.02M | 0.01% | +4,900+7.4% | Added |
| CenterBook Partners LP | 71,443 | $2.02M | 0.10% | +71,443 | New |
| State of Tennessee, Treasury Department | 71,540 | $2.03M | 0.01% | −42,803−37.4% | Reduced |
| Amalgamated Bank | 71,562 | $2.03M | 0.01% | −6,788−8.7% | Reduced |
| Xponance, Inc. | 74,495 | $2.11M | 0.01% | −2,036−2.7% | Reduced |
| Red Spruce Capital, LLC | 76,448 | $2.17M | 0.75% | +38,413+101.0% | Added |
| ProShare Advisors LLC | 77,813 | $2.20M | 0.00% | −533,470−87.3% | Reduced |
| Fifth Third Bancorp | 79,154 | $2.24M | 0.00% | −1,584−2.0% | Reduced |
| Voya Investment Management LLC | 81,010 | $2.29M | 0.00% | −3,533−4.2% | Reduced |
| CI Private Wealth, LLC | 81,676 | $2.31M | 0.00% | +2,275+2.9% | Added |
| Captrust Financial Advisors | 82,161 | $2.33M | 0.00% | +30,810+60.0% | Added |
| Linden Thomas Advisory Services, LLC | 83,079 | $2.35M | 0.19% | +17,020+25.8% | Added |
| SEB Asset Management AB | 84,428 | $2.39M | 0.01% | +1,035+1.2% | Added |
| Brinker Capital Investments, LLC | 84,695 | $2.40M | 0.02% | +36,249+74.8% | Added |
| Retirement Systems of Alabama | 85,786 | $2.43M | 0.01% | −4,214−4.7% | Reduced |
| KBC Group NV | 86,623 | $2.45M | 0.01% | −5,160−5.6% | Reduced |
| CWM Advisors, LLC | 87,593 | $2.48M | 0.10% | +17,248+24.5% | Added |
| Ashford Capital Management Inc | 88,100 | $2.49M | 0.27% | −14,390−14.0% | Reduced |
| Gilder Gagnon Howe & Co LLC | 88,480 | $2.51M | 0.03% | −2,614−2.9% | Reduced |
| Woodline Partners LP | 89,781 | $2.54M | 0.01% | +6,768+8.2% | Added |
| Boston Private Wealth LLC | 90,226 | $2.56M | 0.16% | −5,834−6.1% | Reduced |
| Odyssean, LLC | 90,524 | $2.56M | 0.42% | +90,524 | New |
| Fayez Sarofim & Co | 91,531 | $2.59M | 0.01% | −283,044−75.6% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 92,612 | $2.62M | 0.01% | −135,068−59.3% | Reduced |
| MML Investors Services, LLC | 93,204 | $2.64M | 0.01% | +12,967+16.2% | Added |
| Daiwa Securities Group Inc. | 93,377 | $2.64M | 0.01% | −38,525−29.2% | Reduced |
| Bank of Nova Scotia | 93,291 | $2.65M | 0.00% | −1,194−1.3% | Reduced |
| Graham Capital Management, L.P. | 93,689 | $2.65M | 0.07% | +72,329+338.6% | Added |
| Elo Mutual Pension Insurance Co | 94,422 | $2.67M | 0.03% | +94,422 | New |
| MetLife Investment Management | 95,047 | $2.69M | 0.01% | −6,214−6.1% | Reduced |
| Engineers Gate Manager LP | 97,924 | $2.77M | 0.04% | +97,924 | New |
| CIBC Asset Management Inc | 98,877 | $2.80M | 0.01% | −78,202−44.2% | Reduced |
| Acadian Asset Management LLC | 101,494 | $2.87M | 0.00% | +101,494 | New |
| Buttonwood Financial Advisors Inc. | 103,911 | $2.94M | 0.90% | +39,279+60.8% | Added |
| Headlands Technologies LLC | 104,978 | $2.97M | 0.32% | +69,550+196.3% | Added |
| Ivy Lane Capital Management, LLC | 105,000 | $2.97M | 4.31% | +46,000+78.0% | Added |
| Victory Capital Management Inc | 109,905 | $3.11M | 0.00% | −225,528−67.2% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 123,138 | $3.14M | 0.01% | +84,559+219.2% | Added |
| Night Owl Capital Management, LLC | 110,871 | $3.14M | 0.33% | +1,627+1.5% | Added |
| Havemeyer Place LP | 112,057 | $3.17M | 0.31% | +40,992+57.7% | Added |
| North Star Asset Management Inc | 112,073 | $3.17M | 0.12% | +57,651+105.9% | Added |
| National Bank of Canada | 112,074 | $3.17M | 0.00% | +66,577+146.3% | Added |
| IFM Investors Pty Ltd | 112,204 | $3.18M | 0.02% | +26,535+31.0% | Added |
| State of Michigan Retirement System | 113,300 | $3.21M | 0.01% | −3,200−2.7% | Reduced |
| Dash Acquisitions Inc. | 105,578 | $3.22M | 0.65% | +1,201+1.2% | Added |
| HighTower Advisors, LLC | 115,385 | $3.27M | 0.00% | −8,799−7.1% | Reduced |
| Czech National Bank | 116,234 | $3.29M | 0.02% | +808+0.7% | Added |
| Public Sector Pension Investment Board | 116,645 | $3.30M | 0.01% | −3,960−3.3% | Reduced |
| Public Employees Retirement System of Ohio | 117,069 | $3.32M | 0.01% | −5,852−4.8% | Reduced |
| ICICI Prudential Asset Management Co Ltd | 117,200 | $3.32M | 0.36% | +39,643+51.1% | Added |
| Resona Asset Management Co.,Ltd. | 117,080 | $3.34M | 0.02% | −13,934−10.6% | Reduced |
| Arizona State Retirement System | 120,360 | $3.41M | 0.02% | +5,198+4.5% | Added |
| Entropy Technologies, LP | 121,537 | $3.44M | 0.14% | +82,884+214.4% | Added |
| Cetera Investment Advisers | 122,189 | $3.46M | 0.00% | −14,088−10.3% | Reduced |
| Lighthouse Investment Partners, LLC | 122,413 | $3.47M | 0.11% | −97,009−44.2% | Reduced |
| Vanderbilt University | 123,160 | $3.49M | 0.48% | +49,407+67.0% | Added |
| Apollon Wealth Management, LLC | 123,558 | $3.50M | 0.04% | +123,558 | New |
| Botty Investors LLC | 126,000 | $3.57M | 0.75% | −1,000−0.8% | Reduced |
| Abn Amro Investment Solutions | 126,535 | $3.58M | 0.03% | +22,659+21.8% | Added |
| Fideuram Asset Management (Ireland) dac | 109,962 | $3.61M | 0.07% | +86,454+367.8% | Added |
| Nykredit A/S | 128,197 | $3.63M | 0.01% | +128,197 | New |
| Brown Advisory Inc | 128,901 | $3.65M | 0.01% | −208,120−61.8% | Reduced |
| Handelsbanken Fonder AB | 129,700 | $3.67M | 0.01% | +7,820+6.4% | Added |
| Point72 Asset Management, L.P. | 130,616 | $3.70M | 0.01% | +130,616 | New |
| LPL Financial LLC | 130,787 | $3.70M | 0.00% | +11,946+10.1% | Added |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 132,070 | $3.74M | 0.02% | +1,300+1.0% | Added |
| Walleye Capital LLC | 132,625 | $3.76M | 0.02% | −404,162−75.3% | Reduced |
| Toronto Dominion Bank | 132,652 | $3.76M | 0.01% | +528+0.4% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 134,199 | $3.80M | 0.02% | −4,118−3.0% | Reduced |
| Glenmede Trust Co NA | 134,299 | $3.80M | 0.02% | −72,732−35.1% | Reduced |
| State of New Jersey Common Pension Fund D | 136,089 | $3.85M | 0.01% | −9,169−6.3% | Reduced |
| Credit Agricole S A | 137,686 | $3.90M | 0.01% | −2,539−1.8% | Reduced |
| Franklin Resources Inc | 138,896 | $3.93M | 0.00% | −110,677−44.3% | Reduced |
| Caxton Associates LLP | 142,518 | $4.04M | 0.08% | +58,570+69.8% | Added |
| Qsemble Capital Management, LP | 143,683 | $4.07M | 0.52% | +108,340+306.5% | Added |
| Jefferies Financial Group Inc. | 148,731 | $4.21M | 0.04% | +138,455+1,347.4% | Added |
| Nomura Asset Management Co Ltd | 148,907 | $4.22M | 0.01% | −15,054−9.2% | Reduced |
| TD Asset Management Inc | 152,214 | $4.31M | 0.00% | −60,199−28.3% | Reduced |
| KLP Kapitalforvaltning AS | 153,300 | $4.34M | 0.01% | 00.0% | Unchanged |
| Jupiter Asset Management Ltd | 154,527 | $4.38M | 0.02% | −221,214−58.9% | Reduced |
| Natixis Advisors, L.P. | 154,812 | $4.38M | 0.00% | +10,325+7.1% | Added |
| Mackenzie Financial Corp | 155,124 | $4.39M | 0.00% | −1,483,549−90.5% | Reduced |
| Landmark Investment Partners, L.P. | 144,011 | $4.40M | 4.07% | +24,045+20.0% | Added |
| American Century Companies Inc | 157,366 | $4.46M | 0.00% | +95,408+154.0% | Added |
| Catalyst Funds Management Pty Ltd | 158,250 | $4.48M | 0.25% | +158,250 | New |
| Mercer Global Advisors Inc | 158,582 | $4.49M | 0.01% | +110,805+231.9% | Added |
| Needham Investment Management LLC | 159,500 | $4.52M | 0.14% | +17,500+12.3% | Added |