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 |
|---|---|---|---|---|---|
| Wells Fargo & Company | 1,253,821 | $35.5M | 0.01% | −148,555−10.6% | Reduced |
| Arrowstreet Capital, Limited Partnership | 1,299,558 | $36.8M | 0.02% | +1,258,647+3,076.5% | Added |
| DF Dent & Co Inc | 1,319,009 | $37.4M | 0.71% | −286,148−17.8% | Reduced |
| Nuveen, LLC | 1,325,564 | $37.5M | 0.01% | −605,244−31.3% | Reduced |
| Marshall Wace, LLP | 1,381,204 | $39.1M | 0.03% | +863,944+167.0% | Added |
| Squarepoint Ops LLC | 1,442,049 | $40.8M | 0.08% | +659,442+84.3% | Added |
| Royal Bank of Canada | 1,467,115 | $41.5M | 0.01% | +31,381+2.2% | Added |
| Pictet Asset Management Holding SA | 1,470,824 | $41.7M | 0.04% | +98,665+7.2% | Added |
| Dimensional Fund Advisors LP | 1,515,376 | $42.9M | 0.01% | −886,476−36.9% | Reduced |
| Envestnet Asset Management Inc | 1,535,584 | $43.5M | 0.01% | −266,953−14.8% | Reduced |
| Voloridge Investment Management, LLC | 1,543,483 | $43.7M | 0.19% | +213,525+16.1% | Added |
| Fiera Capital Corp | 1,566,845 | $44.4M | 0.16% | +1,085,134+225.3% | Added |
| HSBC Holdings PLC | 1,570,774 | $44.5M | 0.02% | +223,868+16.6% | Added |
| BNP Paribas Arbitrage, SA | 1,578,322 | $44.7M | 0.02% | +809,606+105.3% | Added |
| Legal & General Group Plc | 1,682,774 | $47.7M | 0.01% | −1,342,734−44.4% | Reduced |
| Thompson Siegel & Walmsley LLC | 1,744,040 | $49.4M | 0.89% | +1,128,789+183.5% | Added |
| Erste Asset Management GmbH | 1,700,000 | $49.8M | 0.39% | +1,250,000+277.8% | Added |
| Bank of New York Mellon Corp | 2,005,395 | $56.8M | 0.01% | −395,285−16.5% | Reduced |
| Beck Mack & Oliver LLC | 2,084,233 | $59.0M | 1.15% | −842,742−28.8% | Reduced |
| Jane Street Group, LLC | 2,162,322 | $61.2M | 0.04% | +1,074,875+98.8% | Added |
| Bank of Montreal | 2,209,141 | $62.6M | 0.02% | −278,574−11.2% | Reduced |
| Deutsche Bank AG | 2,264,379 | $64.1M | 0.02% | +364,877+19.2% | Added |
| Vanguard Fiduciary Trust Co | 2,297,974 | $65.1M | 0.01% | −93,087−3.9% | Reduced |
| UBS Group AG | 2,328,376 | $65.9M | 0.01% | +1,002,348+75.6% | Added |
| Ensign Peak Advisors, Inc | 2,373,407 | $67.2M | 0.11% | −360,882−13.2% | Reduced |
| Nomura Asset Management International Inc. | 2,403,003 | $68.1M | 0.10% | +69,238+3.0% | Added |
| FMR LLC | 2,474,902 | $70.1M | 0.00% | −356,622−12.6% | Reduced |
| Canada Pension Plan Investment Board | 2,481,641 | $70.3M | 0.04% | +470,678+23.4% | Added |
| UBS Asset Management Americas Inc | 2,521,571 | $71.4M | 0.01% | +95,878+4.0% | Added |
| Spyglass Capital Management LLC | 2,694,697 | $76.3M | 4.13% | +1,583,473+142.5% | Added |
| Bank of America Corp | 2,735,102 | $77.5M | 0.00% | −833,005−23.3% | Reduced |
| Charles Schwab Investment Management Inc | 2,962,442 | $83.9M | 0.01% | +88,180+3.1% | Added |
| Massachusetts Financial Services Co | 2,983,969 | $84.5M | 0.03% | +2,027,873+212.1% | Added |
| Van Eck Associates Corp | 3,078,903 | $87.2M | 0.05% | −399,823−11.5% | Reduced |
| Amundi | 3,135,933 | $88.8M | 0.02% | −144,791−4.4% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 3,136,727 | $88.9M | 0.09% | +461,226+17.2% | Added |
| Qube Research & Technologies Ltd | 3,218,369 | $91.1M | 0.10% | +3,218,369 | New |
| Northern Trust Corp | 3,448,839 | $97.7M | 0.01% | +16,608+0.5% | Added |
| Principal Financial Group Inc | 3,790,794 | $107.4M | 0.05% | −13,905,398−78.6% | Reduced |
| Capital Research Global Investors | 4,193,733 | $118.8M | 0.02% | −179,973−4.1% | Reduced |
| Federated Hermes, Inc. | 4,426,727 | $125.4M | 0.18% | +3,128,769+241.1% | Added |
| Goldman Sachs Group Inc | 5,129,484 | $145.3M | 0.02% | −4,116,328−44.5% | Reduced |
| JPMorgan Chase & Co | 4,939,994 | $145.4M | 0.01% | +3,090,449+167.1% | Added |
| Meritage Group LP | 5,394,164 | $152.8M | 5.89% | +2,065,158+62.0% | Added |
| Morgan Stanley | 5,485,870 | $155.4M | 0.01% | +73,255+1.4% | Added |
| Norges Bank | 5,949,912 | $168.5M | 0.02% | +5,949,912 | New |
| EdgePoint Investment Group Inc. | 5,950,002 | $168.5M | 1.27% | +5,950,002 | New |
| Invesco Ltd. | 6,808,377 | $192.8M | 0.02% | −9,139,148−57.3% | Reduced |
| Jupiter Topco LLC | 7,832,860 | $221.8M | 0.09% | +7,832,860 | New |
| AQR Capital Management LLC | 8,445,474 | $239.2M | 0.08% | +7,182,770+568.8% | Added |
| Polen Capital Management LLC | 8,759,314 | $248.1M | 2.14% | −3,811,054−30.3% | Reduced |
| Akre Capital Management LLCSuperinvestorAkre Capital Management | 11,699,396 | $331.3M | 6.49% | +1,351,123+13.1% | Added |
| Geode Capital Management, LLC | 12,166,469 | $343.3M | 0.02% | −282,183−2.3% | Reduced |
| Baillie Gifford & Co | 13,154,165 | $372.5M | 0.34% | −456,757−3.4% | Reduced |
| Capital International Investors | 16,643,016 | $471.3M | 0.10% | +1,129,263+7.3% | Added |
| State Street Corp | 18,410,876 | $521.4M | 0.02% | −240,099−1.3% | Reduced |
| Bamco Inc | 21,626,763 | $612.5M | 0.92% | +5,312,588+32.6% | Added |
| Vanguard Capital Management LLC | 26,683,792 | $755.7M | 0.02% | −740,111−2.7% | Reduced |
| BlackRock, Inc. | 33,813,969 | $957.6M | 0.01% | +5,7850.0% | Added |
| Vanguard Portfolio Management LLC | 37,914,844 | $1.07B | 0.05% | −319,289−0.8% | Reduced |
| Tiger Global Management LLCSuperinvestorTiger Global Management | 0 | $0 | 0.00% | −1,500,000−100.0% | Sold out |
| Greenhouse Funds LLLP | 0 | $0 | 0.00% | −1,377,305−100.0% | Sold out |
| Capitolis Liquid Global Markets LLC | 0 | $0 | 0.00% | −1,355,000−100.0% | Sold out |
| Stephens Investment Management Group LLC | 0 | $0 | 0.00% | −872,463−100.0% | Sold out |
| Corvex Management LP | 0 | $0 | 0.00% | −851,734−100.0% | Sold out |
| TimesSquare Capital Management, LLC | 0 | $0 | 0.00% | −795,580−100.0% | Sold out |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −497,500−100.0% | Sold out |
| Northwood Liquid Management LP | 0 | $0 | 0.00% | −483,200−100.0% | Sold out |
| ShawSpring Partners LLC | 0 | $0 | 0.00% | −339,081−100.0% | Sold out |
| Foster Victor Wealth Advisors, LLC | 0 | $0 | 0.00% | −340,762−100.0% | Sold out |
| BSN Capital Partners Ltd | 0 | $0 | 0.00% | −150,857−100.0% | Sold out |
| Mizuho Markets Americas LLC | 0 | $0 | 0.00% | −275,876−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −252,950−100.0% | Sold out |
| Nicholas Company, Inc. | 0 | $0 | 0.00% | −214,294−100.0% | Sold out |
| Ycg, LLC | 0 | $0 | 0.00% | −195,980−100.0% | Sold out |
| Cortland Associates Inc | 0 | $0 | 0.00% | −181,019−100.0% | Sold out |
| Tredje AP-fonden | 0 | $0 | 0.00% | −161,654−100.0% | Sold out |
| Granahan Investment Management Inc | 0 | $0 | 0.00% | −161,047−100.0% | Sold out |
| Motley Fool Wealth Management, LLC | 0 | $0 | 0.00% | −153,002−100.0% | Sold out |
| EVR Research LP | 0 | $0 | 0.00% | −130,000−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −101,423−100.0% | Sold out |
| GF Fund Management Co. Ltd. | 0 | $0 | 0.00% | −86,853−100.0% | Sold out |
| Solidarilty Wealth, LLC | 0 | $0 | 0.00% | −81,303−100.0% | Sold out |
| USS Investment Management Ltd | 0 | $0 | 0.00% | −78,020−100.0% | Sold out |
| Edgestream Partners, L.P. | 0 | $0 | 0.00% | −74,431−100.0% | Sold out |
| Blue Zone Wealth Advisors, LLC | 0 | $0 | 0.00% | −71,468−100.0% | Sold out |
| Americana Partners, LLC | 0 | $0 | 0.00% | −57,568−100.0% | Sold out |
| iA Global Asset Management Inc. | 0 | $0 | 0.00% | −50,393−100.0% | Sold out |
| Shelton Capital Management | 0 | $0 | 0.00% | −48,672−100.0% | Sold out |
| Profund Advisors LLC | 0 | $0 | 0.00% | −32,545−100.0% | Sold out |
| Harvest Fund Management Co., Ltd | 0 | $0 | 0.00% | −31,007−100.0% | Sold out |
| PEAK6 LLC | 0 | $0 | 0.00% | −26,037−100.0% | Sold out |
| Aurora Investment Managers, LLC. | 0 | $0 | 0.00% | −22,187−100.0% | Sold out |
| ASR Vermogensbeheer N.V. | 0 | $0 | 0.00% | −21,936−100.0% | Sold out |
| Commerce Bank | 0 | $0 | 0.00% | −20,452−100.0% | Sold out |
| Quadrant Capital Group LLC | 0 | $0 | 0.00% | −16,861−100.0% | Sold out |
| Osmosis Investment Management UK Ltd | 0 | $0 | 0.00% | −16,392−100.0% | Sold out |
| Farringdon Capital, Ltd. | 0 | $0 | 0.00% | −15,697−100.0% | Sold out |
| PKO Investment Management Joint-Stock Co | 0 | $0 | 0.00% | −15,000−100.0% | Sold out |
| E Fund Management Co., Ltd. | 0 | $0 | 0.00% | −14,915−100.0% | Sold out |