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 2025
Institutional positions in Costar Group, Inc. as of Jun 30, 2025. 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
- 873
- +26 vs. Q1 2025
- Shares held
- 424.8M
- −3.49M (−0.8%) vs. Q1 2025
- Total value
- $34.2B
- +$258.5M (+0.8%) vs. Q1 2025
- New holders
- 101
- 355 more added
- Sold out
- 75
- 315 more reduced
11 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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 2025
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Asset Management One Co.,Ltd. | 179,394 | $14.4M | 0.05% | −121,290−40.3% | Reduced |
| FIL Ltd | 179,622 | $14.4M | 0.01% | −39,753−18.1% | Reduced |
| Tribune Investment Group LP | 180,000 | $14.5M | 7.13% | +180,000 | New |
| Freestone Grove Partners LP | 181,877 | $14.6M | 0.11% | −124,744−40.7% | Reduced |
| Korea Investment CORP | 183,350 | $14.7M | 0.03% | −72,269−28.3% | Reduced |
| DekaBank Deutsche Girozentrale | 183,640 | $14.8M | 0.03% | +86,875+89.8% | Added |
| Clearstead Advisors, LLC | 188,274 | $15.1M | 0.21% | +4,030+2.2% | Added |
| Cortland Associates Inc | 191,354 | $15.4M | 1.80% | +440+0.2% | Added |
| Danske Bank A/S | 194,432 | $15.6M | 0.04% | +7,357+3.9% | Added |
| APG Asset Management N.V. | 228,500 | $15.7M | 0.05% | +7,600+3.4% | Added |
| Toronto Dominion Bank | 195,012 | $15.7M | 0.03% | +32,119+19.7% | Added |
| Treasurer of the State of North Carolina | 195,062 | $15.7M | 0.05% | +5,034+2.6% | Added |
| CIBC World Markets Corp | 195,452 | $15.7M | 0.10% | +26,889+16.0% | Added |
| Teachers Retirement System of the State of Kentucky | 196,362 | $15.8M | 0.13% | +31,187+18.9% | Added |
| Tremblant Capital Group | 199,881 | $16.1M | 1.55% | +103,252+106.9% | Added |
| Rafferty Asset Management, LLC | 201,342 | $16.2M | 0.05% | −6,450−3.1% | Reduced |
| Public Employees Retirement System of Ohio | 204,904 | $16.5M | 0.06% | +75,900+58.8% | Added |
| Foster Victor Wealth Advisors, LLC | 200,713 | $17.0M | 1.15% | +4,325+2.2% | Added |
| Erste Asset Management GmbH | 211,000 | $17.0M | 0.14% | +11,000+5.5% | Added |
| Nicholas Company, Inc. | 214,269 | $17.2M | 0.29% | −130−0.1% | Reduced |
| NS Partners Ltd | 214,502 | $17.2M | 0.70% | −5,018−2.3% | Reduced |
| New York State Common Retirement Fund | 220,125 | $17.7M | 0.02% | +2,900+1.3% | Added |
| Chevy Chase Trust Holdings, Inc. | 223,049 | $17.9M | 0.05% | +1,820+0.8% | Added |
| State of Wisconsin Investment Board | 224,417 | $18.0M | 0.04% | −13,396−5.6% | Reduced |
| Prudential Financial Inc | 244,707 | $19.7M | 0.03% | +19,266+8.5% | Added |
| Gilder Gagnon Howe & Co LLC | 245,432 | $19.7M | 0.21% | −328−0.1% | Reduced |
| Swedbank AB | 249,927 | $20.1M | 0.02% | +249,927 | New |
| Aviva PLC | 252,055 | $20.3M | 0.04% | +236,048+1,474.7% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 253,630 | $20.4M | 0.04% | −4,847−1.9% | Reduced |
| Aureus Asset Management, LLC | 253,729 | $20.4M | 1.30% | −6,495−2.5% | Reduced |
| Standard Life Aberdeen plc | 259,237 | $20.8M | 0.04% | +10,368+4.2% | Added |
| Manufacturers Life Insurance Company, The | 263,620 | $21.2M | 0.02% | −12,180−4.4% | Reduced |
| Intrinsic Edge Capital Management LLC | 263,984 | $21.2M | 3.20% | +263,984 | New |
| Neuberger Berman Group LLC | 265,356 | $21.3M | 0.02% | +193,067+267.1% | Added |
| Kornitzer Capital Management Inc | 269,856 | $21.7M | 0.44% | −40,125−12.9% | Reduced |
| Ulysses Management LLC | 270,500 | $21.7M | 4.69% | +113,595+72.4% | Added |
| Landmark Investment Partners, L.P. | 276,150 | $22.2M | 9.95% | −6,816−2.4% | Reduced |
| Tran Capital Management, L.P. | 286,120 | $23.0M | 2.71% | −2,640−0.9% | Reduced |
| Oppenheimer Asset Management Inc. | 286,510 | $23.0M | 0.26% | +5,758+2.1% | Added |
| Ashford Capital Management Inc | 291,103 | $23.4M | 2.75% | +4,333+1.5% | Added |
| Motley Fool Wealth Management, LLC | 291,195 | $23.4M | 1.41% | −39,380−11.9% | Reduced |
| Stifel Financial Corp | 292,304 | $23.5M | 0.02% | −3,930−1.3% | Reduced |
| Granahan Investment Management Inc | 300,932 | $24.2M | 0.98% | −46,761−13.4% | Reduced |
| Ninety One UK Ltd | 320,015 | $25.7M | 0.06% | −36,932−10.3% | Reduced |
| New York State Teachers Retirement System | 321,832 | $25.9M | 0.05% | +1,410+0.4% | Added |
| Petrus Trust Company, LTA | 327,097 | $26.3M | 2.73% | +157,097+92.4% | Added |
| Allspring Global Investments Holdings, LLC | 326,649 | $26.8M | 0.04% | −149,596−31.4% | Reduced |
| Victory Capital Management Inc | 335,852 | $27.0M | 0.02% | −1,348−0.4% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 337,656 | $27.1M | 0.05% | −17,840−5.0% | Reduced |
| NZS Capital, LLC | 350,527 | $28.2M | 0.96% | −45,781−11.6% | Reduced |
| Gillson Capital LP | 356,922 | $28.7M | 2.19% | +87,752+32.6% | Added |
| AQR Capital Management LLC | 364,858 | $29.3M | 0.02% | +236,255+183.7% | Added |
| Caden Capital Partners, LP | 379,501 | $30.5M | 10.14% | −57,773−13.2% | Reduced |
| Adage Capital Partners GP, L.L.C. | 386,400 | $31.1M | 0.05% | +1,800+0.5% | Added |
| Clearbridge Investments, LLC | 398,212 | $32.0M | 0.03% | +60.0% | Added |
| Quantum Capital Management, LLC | 403,965 | $32.5M | 3.51% | −124,241−23.5% | Reduced |
| Royal London Asset Management Ltd | 404,875 | $32.6M | 0.07% | −12,099−2.9% | Reduced |
| State Board of Administration of Florida Retirement System | 409,705 | $32.9M | 0.06% | +940+0.2% | Added |
| Great West Life Assurance Co | 409,701 | $33.0M | 0.05% | +19,788+5.1% | Added |
| National Bank of Canada | 415,626 | $33.4M | 0.04% | +73,285+21.4% | Added |
| Bank of Montreal | 420,126 | $33.8M | 0.02% | −22,790−5.1% | Reduced |
| No Street GP LP | 430,000 | $34.6M | 2.58% | +35,000+8.9% | Added |
| Bridgewater Associates, LP | 432,708 | $34.8M | 0.14% | −553,285−56.1% | Reduced |
| Ycg, LLC | 438,811 | $35.3M | 2.73% | −8,082−1.8% | Reduced |
| Ironvine Capital Partners, LLC | 440,414 | $35.4M | 3.67% | −17,544−3.8% | Reduced |
| Russell Investments Group, Ltd. | 446,991 | $35.9M | 0.05% | +22,195+5.2% | Added |
| Geneva Capital Management LLC | 447,649 | $36.0M | 0.60% | +44,444+11.0% | Added |
| LPL Financial LLC | 459,963 | $37.0M | 0.01% | +13,413+3.0% | Added |
| Alliancebernstein L.P. | 460,671 | $37.0M | 0.01% | −16,835−3.5% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 461,925 | $37.1M | 0.07% | −693,952−60.0% | Reduced |
| Ownership Capital B.V. | 474,699 | $38.2M | 2.22% | −151,089−24.1% | Reduced |
| Mitsubishi UFJ Trust & Banking Corp | 476,675 | $38.3M | 0.09% | −40,094−7.8% | Reduced |
| ThornTree Capital Partners LP | 512,507 | $41.2M | 6.86% | +119,309+30.3% | Added |
| Frontier Capital Management Co LLC | 527,478 | $42.4M | 0.39% | +88,053+20.0% | Added |
| Canada Pension Plan Investment Board | 534,498 | $43.0M | 0.04% | +67,363+14.4% | Added |
| Natixis Advisors, L.P. | 537,666 | $43.2M | 0.07% | −56,936−9.6% | Reduced |
| National Pension Service | 541,601 | $43.5M | 0.04% | +4,539+0.8% | Added |
| Telemark Asset Management, LLC | 550,000 | $44.2M | 4.69% | +50,000+10.0% | Added |
| Arrowstreet Capital, Limited Partnership | 558,946 | $44.9M | 0.03% | +66,667+13.5% | Added |
| Douglas Lane & Associates, LLC | 584,311 | $47.0M | 0.68% | +27,560+5.0% | Added |
| Candlestick Capital Management LP | 596,098 | $47.9M | 1.59% | −582,549−49.4% | Reduced |
| First Trust Advisors LP | 616,538 | $49.6M | 0.04% | +339,464+122.5% | Added |
| SEI Investments Co | 654,647 | $52.6M | 0.06% | −26,238−3.9% | Reduced |
| Parnassus Investments | 655,398 | $52.7M | 0.12% | +655,398 | New |
| ProShare Advisors LLC | 661,433 | $53.2M | 0.11% | +43,662+7.1% | Added |
| Raymond James Financial Inc | 661,877 | $53.2M | 0.02% | −25,034−3.6% | Reduced |
| TD Asset Management Inc | 682,217 | $54.9M | 0.05% | −32,364−4.5% | Reduced |
| California Public Employees Retirement System | 686,918 | $55.2M | 0.04% | +56,269+8.9% | Added |
| California State Teachers Retirement System | 698,309 | $56.1M | 0.06% | +1,860+0.3% | Added |
| Peregrine Capital Management LLC | 700,543 | $56.3M | 1.70% | −38,854−5.3% | Reduced |
| HSBC Holdings PLC | 708,388 | $56.9M | 0.04% | −51,903−6.8% | Reduced |
| Ci Investments Inc. | 708,453 | $57.0M | 0.21% | −18,664−2.6% | Reduced |
| Weitz Investment Management, Inc.SuperinvestorWeitz Investment Management | 765,600 | $61.6M | 3.31% | −146,000−16.0% | Reduced |
| Ensign Peak Advisors, Inc | 771,378 | $62.0M | 0.11% | −63,831−7.6% | Reduced |
| Stephens Investment Management Group LLC | 773,281 | $62.2M | 0.82% | +34,444+4.7% | Added |
| Rhumbline Advisers | 782,168 | $62.9M | 0.05% | +13,802+1.8% | Added |
| Kayne Anderson Rudnick Investment Management LLC | 782,686 | $62.9M | 0.15% | −49,853−6.0% | Reduced |
| American Capital Management Inc | 795,961 | $64.0M | 2.65% | −142,181−15.2% | Reduced |
| Spyglass Capital Management LLC | 803,282 | $64.6M | 3.81% | +307,424+62.0% | Added |
| TimesSquare Capital Management, LLC | 810,196 | $65.1M | 0.94% | +57,309+7.6% | Added |