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 |
|---|---|---|---|---|---|
| Jacobs Levy Equity Management, Inc | 441,412 | $12.5M | 0.04% | +441,412 | New |
| HRT Financial LP | 424,767 | $12.0M | 0.02% | +424,767 | New |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 423,181 | $12.0M | 0.83% | −93,844−18.2% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 420,878 | $11.9M | 0.24% | +108,960+34.9% | Added |
| Geneva Capital Management LLC | 418,102 | $11.8M | 0.27% | −19,360−4.4% | Reduced |
| Ninety One UK Ltd | 408,359 | $11.6M | 0.03% | −6,627−1.6% | Reduced |
| Susquehanna International Group, LLP | 405,498 | $11.5M | 0.01% | +151,169+59.4% | Added |
| State of Wisconsin Investment Board | 400,286 | $11.3M | 0.02% | +114,373+40.0% | Added |
| Ardmore Road Asset Management LP | 390,146 | $11.0M | 0.65% | −276,754−41.5% | Reduced |
| State Board of Administration of Florida Retirement System | 369,893 | $10.5M | 0.02% | −6,110−1.6% | Reduced |
| Adage Capital Partners GP, L.L.C. | 363,900 | $10.3M | 0.01% | −14,200−3.8% | Reduced |
| First Citizens Bank & Trust Co | 363,248 | $10.3M | 0.15% | +19,744+5.7% | Added |
| Mariner, LLC | 357,114 | $10.1M | 0.01% | +247,575+226.0% | Added |
| Prana Capital Management, LP | 356,512 | $10.1M | 0.31% | −158,875−30.8% | Reduced |
| Ieq Capital, LLC | 351,667 | $9.96M | 0.05% | +252,423+254.3% | Added |
| Ossiam | 345,829 | $9.79M | 0.13% | −41,629−10.7% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 341,444 | $9.67M | 0.05% | +17,067+5.3% | Added |
| SEI Investments Co | 339,877 | $9.62M | 0.01% | −46,681−12.1% | Reduced |
| Raymond James Financial Inc | 339,088 | $9.60M | 0.00% | −289,495−46.1% | Reduced |
| New York State Teachers Retirement System | 320,465 | $9.08M | 0.02% | −2,291−0.7% | Reduced |
| Standard Life Aberdeen plc | 312,332 | $8.85M | 0.01% | −7,145−2.2% | Reduced |
| Ironvine Capital Partners, LLC | 294,475 | $8.34M | 0.78% | −80,856−21.5% | Reduced |
| Tsai Capital Corp | 294,211 | $8.33M | 6.16% | +67,485+29.8% | Added |
| S.E.E.D. Planning Group LLC | 291,843 | $8.26M | 2.18% | +72,754+33.2% | Added |
| XTX Topco Ltd | 280,134 | $7.93M | 0.10% | +78,817+39.2% | Added |
| Creative Planning | 272,391 | $7.71M | 0.00% | +175,160+180.1% | Added |
| Teachers Retirement System of the State of Kentucky | 269,783 | $7.64M | 0.05% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 268,915 | $7.62M | 0.01% | +96,632+56.1% | Added |
| Pathstone Holdings, LLC | 267,626 | $7.58M | 0.02% | +229,073+594.2% | Added |
| Oppenheimer Asset Management Inc. | 265,401 | $7.52M | 0.08% | −77,272−22.5% | Reduced |
| DekaBank Deutsche Girozentrale | 183,640 | $7.36M | 0.01% | 00.0% | Unchanged |
| Cerity Partners LLC | 258,275 | $7.31M | 0.01% | +95,793+59.0% | Added |
| Sone Capital Management, LLC | 254,096 | $7.20M | 0.55% | +64,838+34.3% | Added |
| APG Asset Management N.V. | 285,346 | $7.07M | 0.02% | +75,042+35.7% | Added |
| CIBC Bancorp USA Inc. | 238,168 | $7.04M | 0.01% | −261,945−52.4% | Reduced |
| Aviva PLC | 243,753 | $6.90M | 0.01% | +700+0.3% | Added |
| Tremblant Capital Group | 228,535 | $6.47M | 0.19% | −1,277,496−84.8% | Reduced |
| DnB Asset Management AS | 226,668 | $6.42M | 0.02% | +138,446+156.9% | Added |
| Manufacturers Life Insurance Company, The | 226,560 | $6.42M | 0.01% | −22,189−8.9% | Reduced |
| Aquatic Capital Management LLC | 221,838 | $6.28M | 0.22% | +221,838 | New |
| Holocene Advisors, LP | 216,209 | $6.12M | 0.01% | +123,221+132.5% | Added |
| Vanguard Investments Australia, Ltd. | 214,291 | $6.07M | 0.02% | +3,297+1.6% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 208,895 | $6.05M | 0.01% | −37,739−15.3% | Reduced |
| Omers Administration Corp | 207,870 | $5.89M | 0.04% | +186,252+861.6% | Added |
| Prudential Financial Inc | 204,905 | $5.80M | 0.01% | −1,179−0.6% | Reduced |
| La Banque Postale Asset Management SA | 198,250 | $5.61M | 0.06% | +26,470+15.4% | Added |
| Chevy Chase Trust Holdings, Inc. | 197,981 | $5.61M | 0.01% | −11,024−5.3% | Reduced |
| Louisbourg Investments Inc. | 256,336 | $5.50M | 1.01% | +81,250+46.4% | Added |
| Royal London Asset Management Ltd | 187,394 | $5.31M | 0.01% | −244,476−56.6% | Reduced |
| Ameriprise Financial Inc | 185,807 | $5.25M | 0.00% | −501,969−73.0% | Reduced |
| Asset Management One Co.,Ltd. | 184,921 | $5.24M | 0.01% | −566−0.3% | Reduced |
| Swedbank AB | 181,818 | $5.15M | 0.00% | +82,937+83.9% | Added |
| Jones Financial Companies LLLP | 165,912 | $5.02M | 0.00% | +33,540+25.3% | Added |
| Danske Bank A/S | 174,139 | $4.93M | 0.01% | −33,296−16.1% | Reduced |
| Treasurer of the State of North Carolina | 172,126 | $4.88M | 0.01% | −6,650−3.7% | Reduced |
| Great West Life Assurance Co | 171,538 | $4.85M | 0.01% | −65,188−27.5% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 170,415 | $4.83M | 0.02% | +14,689+9.4% | Added |
| NEOS Investment Management LLC | 165,566 | $4.69M | 0.02% | −199,135−54.6% | Reduced |
| Andra AP-fonden | 164,500 | $4.66M | 0.05% | +164,500 | New |
| Stifel Financial Corp | 164,476 | $4.66M | 0.00% | −80,737−32.9% | Reduced |
| Needham Investment Management LLC | 159,500 | $4.52M | 0.14% | +17,500+12.3% | Added |
| Mercer Global Advisors Inc | 158,582 | $4.49M | 0.01% | +110,805+231.9% | Added |
| Catalyst Funds Management Pty Ltd | 158,250 | $4.48M | 0.25% | +158,250 | New |
| American Century Companies Inc | 157,366 | $4.46M | 0.00% | +95,408+154.0% | Added |
| Landmark Investment Partners, L.P. | 144,011 | $4.40M | 4.07% | +24,045+20.0% | Added |
| Mackenzie Financial Corp | 155,124 | $4.39M | 0.00% | −1,483,549−90.5% | Reduced |
| Natixis Advisors, L.P. | 154,812 | $4.38M | 0.00% | +10,325+7.1% | Added |
| Jupiter Asset Management Ltd | 154,527 | $4.38M | 0.02% | −221,214−58.9% | Reduced |
| KLP Kapitalforvaltning AS | 153,300 | $4.34M | 0.01% | 00.0% | Unchanged |
| TD Asset Management Inc | 152,214 | $4.31M | 0.00% | −60,199−28.3% | Reduced |
| Nomura Asset Management Co Ltd | 148,907 | $4.22M | 0.01% | −15,054−9.2% | Reduced |
| Jefferies Financial Group Inc. | 148,731 | $4.21M | 0.04% | +138,455+1,347.4% | Added |
| Qsemble Capital Management, LP | 143,683 | $4.07M | 0.52% | +108,340+306.5% | Added |
| Caxton Associates LLP | 142,518 | $4.04M | 0.08% | +58,570+69.8% | Added |
| Franklin Resources Inc | 138,896 | $3.93M | 0.00% | −110,677−44.3% | Reduced |
| Credit Agricole S A | 137,686 | $3.90M | 0.01% | −2,539−1.8% | Reduced |
| State of New Jersey Common Pension Fund D | 136,089 | $3.85M | 0.01% | −9,169−6.3% | Reduced |
| Glenmede Trust Co NA | 134,299 | $3.80M | 0.02% | −72,732−35.1% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 134,199 | $3.80M | 0.02% | −4,118−3.0% | Reduced |
| Toronto Dominion Bank | 132,652 | $3.76M | 0.01% | +528+0.4% | Added |
| Walleye Capital LLC | 132,625 | $3.76M | 0.02% | −404,162−75.3% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 132,070 | $3.74M | 0.02% | +1,300+1.0% | Added |
| LPL Financial LLC | 130,787 | $3.70M | 0.00% | +11,946+10.1% | Added |
| Point72 Asset Management, L.P. | 130,616 | $3.70M | 0.01% | +130,616 | New |
| Handelsbanken Fonder AB | 129,700 | $3.67M | 0.01% | +7,820+6.4% | Added |
| Brown Advisory Inc | 128,901 | $3.65M | 0.01% | −208,120−61.8% | Reduced |
| Nykredit A/S | 128,197 | $3.63M | 0.01% | +128,197 | New |
| Fideuram Asset Management (Ireland) dac | 109,962 | $3.61M | 0.07% | +86,454+367.8% | Added |
| Abn Amro Investment Solutions | 126,535 | $3.58M | 0.03% | +22,659+21.8% | Added |
| Botty Investors LLC | 126,000 | $3.57M | 0.75% | −1,000−0.8% | Reduced |
| Apollon Wealth Management, LLC | 123,558 | $3.50M | 0.04% | +123,558 | New |
| Vanderbilt University | 123,160 | $3.49M | 0.48% | +49,407+67.0% | Added |
| Lighthouse Investment Partners, LLC | 122,413 | $3.47M | 0.11% | −97,009−44.2% | Reduced |
| Cetera Investment Advisers | 122,189 | $3.46M | 0.00% | −14,088−10.3% | Reduced |
| Entropy Technologies, LP | 121,537 | $3.44M | 0.14% | +82,884+214.4% | Added |
| Arizona State Retirement System | 120,360 | $3.41M | 0.02% | +5,198+4.5% | Added |
| Resona Asset Management Co.,Ltd. | 117,080 | $3.34M | 0.02% | −13,934−10.6% | Reduced |
| ICICI Prudential Asset Management Co Ltd | 117,200 | $3.32M | 0.36% | +39,643+51.1% | Added |
| Public Employees Retirement System of Ohio | 117,069 | $3.32M | 0.01% | −5,852−4.8% | Reduced |
| Public Sector Pension Investment Board | 116,645 | $3.30M | 0.01% | −3,960−3.3% | Reduced |