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 $12.3B 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
- 414.1M
- +5.96M (+1.5%) vs. Q1 2026
- Total value
- $12.3B
- −$4.18B (−25.4%) vs. Q1 2026
- New holders
- 115
- 304 more added
- Sold out
- 143
- 265 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 | $12.3B |
| Q1 2026 | 797 | $16.8B |
| Q4 2025 | 847 | $28.6B |
| Q3 2025 | 905 | $35.1B |
| Q2 2025 | 873 | $34.3B |
| Q1 2025 | 858 | $34.0B |
| Q4 2024 | 805 | $29.3B |
| Q3 2024 | 773 | $30.2B |
| Q2 2024 | 767 | $29.4B |
| Q1 2024 | 767 | $40.1B |
| Q4 2023 | 737 | $34.7B |
| Q3 2023 | 690 | $30.1B |
| Q2 2023 | 714 | $35.6B |
| Q1 2023 | 692 | $27.0B |
| Q4 2022 | 704 | $30.5B |
| Q3 2022 | 634 | $29.1B |
| Q2 2022 | 591 | $23.2B |
| Q1 2022 | 589 | $25.2B |
| Q4 2021 | 633 | $30.2B |
| 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 |
|---|---|---|---|---|---|
| Vanguard Portfolio Management LLC | 37,914,844 | $1.07B | 0.05% | −319,289−0.8% | Reduced |
| BlackRock, Inc. | 33,813,969 | $957.6M | 0.01% | +5,7850.0% | Added |
| Vanguard Capital Management LLC | 26,683,792 | $755.7M | 0.02% | −740,111−2.7% | Reduced |
| Bamco Inc | 21,626,763 | $612.5M | 0.92% | +5,312,588+32.6% | Added |
| Banque Cantonale Vaudoise | 19,567 | $554.0M | 0.08% | +5,540+39.5% | Added |
| State Street Corp | 18,410,876 | $521.4M | 0.02% | −240,099−1.3% | Reduced |
| Capital International Investors | 16,643,016 | $471.3M | 0.10% | +1,129,263+7.3% | Added |
| Baillie Gifford & Co | 13,154,165 | $372.5M | 0.34% | −456,757−3.4% | Reduced |
| Geode Capital Management, LLC | 12,166,469 | $343.3M | 0.02% | −282,183−2.3% | Reduced |
| Akre Capital Management LLCSuperinvestorAkre Capital Management | 11,699,396 | $331.3M | 6.49% | +1,351,123+13.1% | Added |
| Polen Capital Management LLC | 8,759,314 | $248.1M | 2.14% | −3,811,054−30.3% | Reduced |
| AQR Capital Management LLC | 8,445,474 | $239.2M | 0.08% | +7,182,770+568.8% | Added |
| Jupiter Topco LLC | 7,832,860 | $221.8M | 0.09% | +7,832,860 | New |
| Invesco Ltd. | 6,808,377 | $192.8M | 0.02% | −9,139,148−57.3% | Reduced |
| EdgePoint Investment Group Inc. | 5,950,002 | $168.5M | 1.27% | +5,950,002 | New |
| Norges Bank | 5,949,912 | $168.5M | 0.02% | +5,949,912 | New |
| Morgan Stanley | 5,485,870 | $155.4M | 0.01% | +73,255+1.4% | Added |
| Meritage Group LP | 5,394,164 | $152.8M | 5.89% | +2,065,158+62.0% | Added |
| JPMorgan Chase & Co | 4,939,994 | $145.4M | 0.01% | +3,090,449+167.1% | Added |
| Goldman Sachs Group Inc | 5,129,484 | $145.3M | 0.02% | −4,116,328−44.5% | Reduced |
| Federated Hermes, Inc. | 4,426,727 | $125.4M | 0.18% | +3,128,769+241.1% | Added |
| Capital Research Global Investors | 4,193,733 | $118.8M | 0.02% | −179,973−4.1% | Reduced |
| Principal Financial Group Inc | 3,790,794 | $107.4M | 0.05% | −13,905,398−78.6% | Reduced |
| Northern Trust Corp | 3,448,839 | $97.7M | 0.01% | +16,608+0.5% | Added |
| Qube Research & Technologies Ltd | 3,218,369 | $91.1M | 0.10% | +3,218,369 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 3,136,727 | $88.9M | 0.09% | +461,226+17.2% | Added |
| Amundi | 3,135,933 | $88.8M | 0.02% | −144,791−4.4% | Reduced |
| Van Eck Associates Corp | 3,078,903 | $87.2M | 0.05% | −399,823−11.5% | Reduced |
| Massachusetts Financial Services Co | 2,983,969 | $84.5M | 0.03% | +2,027,873+212.1% | Added |
| Charles Schwab Investment Management Inc | 2,962,442 | $83.9M | 0.01% | +88,180+3.1% | Added |
| Bank of America Corp | 2,735,102 | $77.5M | 0.00% | −833,005−23.3% | Reduced |
| Spyglass Capital Management LLC | 2,694,697 | $76.3M | 4.13% | +1,583,473+142.5% | Added |
| UBS Asset Management Americas Inc | 2,521,571 | $71.4M | 0.01% | +95,878+4.0% | Added |
| Canada Pension Plan Investment Board | 2,481,641 | $70.3M | 0.04% | +470,678+23.4% | Added |
| FMR LLC | 2,474,902 | $70.1M | 0.00% | −356,622−12.6% | Reduced |
| Nomura Asset Management International Inc. | 2,403,003 | $68.1M | 0.10% | +69,238+3.0% | Added |
| Ensign Peak Advisors, Inc | 2,373,407 | $67.2M | 0.11% | −360,882−13.2% | Reduced |
| UBS Group AG | 2,328,376 | $65.9M | 0.01% | +1,002,348+75.6% | Added |
| Vanguard Fiduciary Trust Co | 2,297,974 | $65.1M | 0.01% | −93,087−3.9% | Reduced |
| Deutsche Bank AG | 2,264,379 | $64.1M | 0.02% | +364,877+19.2% | Added |
| Bank of Montreal | 2,209,141 | $62.6M | 0.02% | −278,574−11.2% | Reduced |
| Jane Street Group, LLC | 2,162,322 | $61.2M | 0.04% | +1,074,875+98.8% | Added |
| Beck Mack & Oliver LLC | 2,084,233 | $59.0M | 1.15% | −842,742−28.8% | Reduced |
| Bank of New York Mellon Corp | 2,005,395 | $56.8M | 0.01% | −395,285−16.5% | Reduced |
| Erste Asset Management GmbH | 1,700,000 | $49.8M | 0.39% | +1,250,000+277.8% | Added |
| Thompson Siegel & Walmsley LLC | 1,744,040 | $49.4M | 0.89% | +1,128,789+183.5% | Added |
| Legal & General Group Plc | 1,682,774 | $47.7M | 0.01% | −1,342,734−44.4% | Reduced |
| BNP Paribas Arbitrage, SA | 1,578,322 | $44.7M | 0.02% | +809,606+105.3% | Added |
| HSBC Holdings PLC | 1,570,774 | $44.5M | 0.02% | +223,868+16.6% | Added |
| Fiera Capital Corp | 1,566,845 | $44.4M | 0.16% | +1,085,134+225.3% | Added |
| Voloridge Investment Management, LLC | 1,543,483 | $43.7M | 0.19% | +213,525+16.1% | Added |
| Envestnet Asset Management Inc | 1,535,584 | $43.5M | 0.01% | −266,953−14.8% | Reduced |
| Dimensional Fund Advisors LP | 1,515,376 | $42.9M | 0.01% | −886,476−36.9% | Reduced |
| Pictet Asset Management Holding SA | 1,470,824 | $41.7M | 0.04% | +98,665+7.2% | Added |
| Royal Bank of Canada | 1,467,115 | $41.5M | 0.01% | +31,381+2.2% | Added |
| Squarepoint Ops LLC | 1,442,049 | $40.8M | 0.08% | +659,442+84.3% | Added |
| Marshall Wace, LLP | 1,381,204 | $39.1M | 0.03% | +863,944+167.0% | Added |
| Nuveen, LLC | 1,325,564 | $37.5M | 0.01% | −605,244−31.3% | Reduced |
| DF Dent & Co Inc | 1,319,009 | $37.4M | 0.71% | −286,148−17.8% | Reduced |
| Arrowstreet Capital, Limited Partnership | 1,299,558 | $36.8M | 0.02% | +1,258,647+3,076.5% | Added |
| Wells Fargo & Company | 1,253,821 | $35.5M | 0.01% | −148,555−10.6% | Reduced |
| Swiss National Bank | 1,183,765 | $33.5M | 0.02% | −60,000−4.8% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 1,169,688 | $33.1M | 0.06% | +1,062,010+986.3% | Added |
| Douglas Lane & Associates, LLC | 1,168,859 | $33.1M | 0.45% | +365,020+45.4% | Added |
| Two Sigma Investments, LP | 1,104,950 | $31.3M | 0.02% | +801,946+264.7% | Added |
| Riverbridge Partners LLC | 1,091,535 | $30.9M | 0.86% | −135,856−11.1% | Reduced |
| D. E. Shaw & Co., Inc. | 1,043,332 | $29.5M | 0.02% | −4,866,291−82.3% | Reduced |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 1,015,380 | $28.8M | 0.02% | −36,461−3.5% | Reduced |
| Colony Group, LLC | 936,775 | $26.5M | 0.03% | +14,657+1.6% | Added |
| Sumitomo Mitsui Trust Holdings, Inc. | 925,120 | $26.2M | 0.01% | −28,954−3.0% | Reduced |
| Man Group plc | 921,094 | $26.1M | 0.05% | +856,365+1,323.0% | Added |
| Capital Fund Management S.A. | 902,723 | $25.6M | 0.18% | +856,370+1,847.5% | Added |
| Citigroup Inc | 889,581 | $25.2M | 0.01% | −64,039−6.7% | Reduced |
| Vanguard Global Advisers, LLC | 881,001 | $24.9M | 0.01% | −47,270−5.1% | Reduced |
| Primecap Management Co | 821,600 | $23.3M | 0.01% | +18,000+2.2% | Added |
| Rhumbline Advisers | 790,116 | $22.4M | 0.02% | −2,647−0.3% | Reduced |
| Vanguard Asset Management, Ltd | 772,828 | $21.9M | 0.01% | +55,158+7.7% | Added |
| Russell Investments Group, Ltd. | 762,930 | $21.6M | 0.02% | +413,147+118.1% | Added |
| Barclays PLC | 758,649 | $21.5M | 0.01% | −473,372−38.4% | Reduced |
| Petrus Trust Company, LTA | 756,200 | $21.4M | 2.01% | 00.0% | Unchanged |
| Millennium Management LLC | 746,995 | $21.2M | 0.01% | +623,405+504.4% | Added |
| Citadel Advisors LLC | 741,898 | $21.0M | 0.01% | −346,306−31.8% | Reduced |
| Trexquant Investment LP | 740,241 | $21.0M | 0.13% | +667,174+913.1% | Added |
| American Capital Management Inc | 725,143 | $20.5M | 0.92% | −100,153−12.1% | Reduced |
| Korea Investment CORP | 698,417 | $19.8M | 0.04% | +514,540+279.8% | Added |
| Peregrine Capital Management LLC | 692,753 | $19.6M | 0.64% | −6,399−0.9% | Reduced |
| Price T Rowe Associates Inc | 686,023 | $19.4M | 0.00% | −831,772−54.8% | Reduced |
| California State Teachers Retirement System | 680,684 | $19.3M | 0.02% | +13,573+2.0% | Added |
| Blair William & Co | 658,159 | $18.6M | 0.05% | −242,154−26.9% | Reduced |
| Alliancebernstein L.P. | 458,488 | $18.5M | 0.01% | +50,980+12.5% | Added |
| Gotham Asset Management, LLC | 635,988 | $18.0M | 0.04% | +188,972+42.3% | Added |
| Tudor Investment Corp Et Al | 627,490 | $17.8M | 0.07% | +448,207+250.0% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 596,676 | $16.9M | 0.04% | +173,087+40.9% | Added |
| Quantinno Capital Management LP | 577,996 | $16.4M | 0.02% | +237,842+69.9% | Added |
| Chicago Capital, LLC | 526,958 | $14.9M | 0.36% | −528,662−50.1% | Reduced |
| United Asset Strategies, Inc. | 489,008 | $13.8M | 0.98% | +489,008 | New |
| New York State Common Retirement Fund | 487,676 | $13.8M | 0.02% | +282,351+137.5% | Added |
| California Public Employees Retirement System | 478,042 | $13.5M | 0.01% | −54,641−10.3% | Reduced |
| NZS Capital, LLC | 475,551 | $13.5M | 0.35% | −233,875−33.0% | Reduced |
| ExodusPoint Capital Management, LP | 458,765 | $13.0M | 0.12% | +434,282+1,773.8% | Added |