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 |
|---|---|---|---|---|---|
| Mitsubishi UFJ Trust & Banking Corp | 476,675 | $38.3M | 0.09% | −40,094−7.8% | Reduced |
| Ownership Capital B.V. | 474,699 | $38.2M | 2.22% | −151,089−24.1% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 461,925 | $37.1M | 0.07% | −693,952−60.0% | Reduced |
| Alliancebernstein L.P. | 460,671 | $37.0M | 0.01% | −16,835−3.5% | Reduced |
| LPL Financial LLC | 459,963 | $37.0M | 0.01% | +13,413+3.0% | Added |
| Geneva Capital Management LLC | 447,649 | $36.0M | 0.60% | +44,444+11.0% | Added |
| Russell Investments Group, Ltd. | 446,991 | $35.9M | 0.05% | +22,195+5.2% | Added |
| Ironvine Capital Partners, LLC | 440,414 | $35.4M | 3.67% | −17,544−3.8% | Reduced |
| Ycg, LLC | 438,811 | $35.3M | 2.73% | −8,082−1.8% | Reduced |
| Bridgewater Associates, LP | 432,708 | $34.8M | 0.14% | −553,285−56.1% | Reduced |
| No Street GP LP | 430,000 | $34.6M | 2.58% | +35,000+8.9% | Added |
| Bank of Montreal | 420,126 | $33.8M | 0.02% | −22,790−5.1% | Reduced |
| National Bank of Canada | 415,626 | $33.4M | 0.04% | +73,285+21.4% | Added |
| Great West Life Assurance Co | 409,701 | $33.0M | 0.05% | +19,788+5.1% | Added |
| State Board of Administration of Florida Retirement System | 409,705 | $32.9M | 0.06% | +940+0.2% | Added |
| Royal London Asset Management Ltd | 404,875 | $32.6M | 0.07% | −12,099−2.9% | Reduced |
| Quantum Capital Management, LLC | 403,965 | $32.5M | 3.51% | −124,241−23.5% | Reduced |
| Clearbridge Investments, LLC | 398,212 | $32.0M | 0.03% | +60.0% | Added |
| Adage Capital Partners GP, L.L.C. | 386,400 | $31.1M | 0.05% | +1,800+0.5% | Added |
| Caden Capital Partners, LP | 379,501 | $30.5M | 10.14% | −57,773−13.2% | Reduced |
| AQR Capital Management LLC | 364,858 | $29.3M | 0.02% | +236,255+183.7% | Added |
| Gillson Capital LP | 356,922 | $28.7M | 2.19% | +87,752+32.6% | Added |
| NZS Capital, LLC | 350,527 | $28.2M | 0.96% | −45,781−11.6% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 337,656 | $27.1M | 0.05% | −17,840−5.0% | Reduced |
| Victory Capital Management Inc | 335,852 | $27.0M | 0.02% | −1,348−0.4% | Reduced |
| Allspring Global Investments Holdings, LLC | 326,649 | $26.8M | 0.04% | −149,596−31.4% | Reduced |
| Petrus Trust Company, LTA | 327,097 | $26.3M | 2.73% | +157,097+92.4% | Added |
| New York State Teachers Retirement System | 321,832 | $25.9M | 0.05% | +1,410+0.4% | Added |
| Ninety One UK Ltd | 320,015 | $25.7M | 0.06% | −36,932−10.3% | Reduced |
| Granahan Investment Management Inc | 300,932 | $24.2M | 0.98% | −46,761−13.4% | Reduced |
| Stifel Financial Corp | 292,304 | $23.5M | 0.02% | −3,930−1.3% | Reduced |
| Motley Fool Wealth Management, LLC | 291,195 | $23.4M | 1.41% | −39,380−11.9% | Reduced |
| Ashford Capital Management Inc | 291,103 | $23.4M | 2.75% | +4,333+1.5% | Added |
| Oppenheimer Asset Management Inc. | 286,510 | $23.0M | 0.26% | +5,758+2.1% | Added |
| Tran Capital Management, L.P. | 286,120 | $23.0M | 2.71% | −2,640−0.9% | Reduced |
| Landmark Investment Partners, L.P. | 276,150 | $22.2M | 9.95% | −6,816−2.4% | Reduced |
| Ulysses Management LLC | 270,500 | $21.7M | 4.69% | +113,595+72.4% | Added |
| Kornitzer Capital Management Inc | 269,856 | $21.7M | 0.44% | −40,125−12.9% | Reduced |
| Neuberger Berman Group LLC | 265,356 | $21.3M | 0.02% | +193,067+267.1% | Added |
| Intrinsic Edge Capital Management LLC | 263,984 | $21.2M | 3.20% | +263,984 | New |
| Manufacturers Life Insurance Company, The | 263,620 | $21.2M | 0.02% | −12,180−4.4% | Reduced |
| Standard Life Aberdeen plc | 259,237 | $20.8M | 0.04% | +10,368+4.2% | Added |
| Aureus Asset Management, LLC | 253,729 | $20.4M | 1.30% | −6,495−2.5% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 253,630 | $20.4M | 0.04% | −4,847−1.9% | Reduced |
| Aviva PLC | 252,055 | $20.3M | 0.04% | +236,048+1,474.7% | Added |
| Swedbank AB | 249,927 | $20.1M | 0.02% | +249,927 | New |
| Gilder Gagnon Howe & Co LLC | 245,432 | $19.7M | 0.21% | −328−0.1% | Reduced |
| Prudential Financial Inc | 244,707 | $19.7M | 0.03% | +19,266+8.5% | Added |
| State of Wisconsin Investment Board | 224,417 | $18.0M | 0.04% | −13,396−5.6% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 223,049 | $17.9M | 0.05% | +1,820+0.8% | Added |
| New York State Common Retirement Fund | 220,125 | $17.7M | 0.02% | +2,900+1.3% | Added |
| NS Partners Ltd | 214,502 | $17.2M | 0.70% | −5,018−2.3% | Reduced |
| Nicholas Company, Inc. | 214,269 | $17.2M | 0.29% | −130−0.1% | Reduced |
| Erste Asset Management GmbH | 211,000 | $17.0M | 0.14% | +11,000+5.5% | Added |
| Foster Victor Wealth Advisors, LLC | 200,713 | $17.0M | 1.15% | +4,325+2.2% | Added |
| Public Employees Retirement System of Ohio | 204,904 | $16.5M | 0.06% | +75,900+58.8% | Added |
| Rafferty Asset Management, LLC | 201,342 | $16.2M | 0.05% | −6,450−3.1% | Reduced |
| Tremblant Capital Group | 199,881 | $16.1M | 1.55% | +103,252+106.9% | Added |
| Teachers Retirement System of the State of Kentucky | 196,362 | $15.8M | 0.13% | +31,187+18.9% | Added |
| CIBC World Markets Corp | 195,452 | $15.7M | 0.10% | +26,889+16.0% | Added |
| Treasurer of the State of North Carolina | 195,062 | $15.7M | 0.05% | +5,034+2.6% | Added |
| Toronto Dominion Bank | 195,012 | $15.7M | 0.03% | +32,119+19.7% | Added |
| APG Asset Management N.V. | 228,500 | $15.7M | 0.05% | +7,600+3.4% | Added |
| Danske Bank A/S | 194,432 | $15.6M | 0.04% | +7,357+3.9% | Added |
| Cortland Associates Inc | 191,354 | $15.4M | 1.80% | +440+0.2% | Added |
| Clearstead Advisors, LLC | 188,274 | $15.1M | 0.21% | +4,030+2.2% | Added |
| DekaBank Deutsche Girozentrale | 183,640 | $14.8M | 0.03% | +86,875+89.8% | Added |
| Korea Investment CORP | 183,350 | $14.7M | 0.03% | −72,269−28.3% | Reduced |
| Freestone Grove Partners LP | 181,877 | $14.6M | 0.11% | −124,744−40.7% | Reduced |
| Tribune Investment Group LP | 180,000 | $14.5M | 7.13% | +180,000 | New |
| FIL Ltd | 179,622 | $14.4M | 0.01% | −39,753−18.1% | Reduced |
| Asset Management One Co.,Ltd. | 179,394 | $14.4M | 0.05% | −121,290−40.3% | Reduced |
| Badgley Phelps Wealth Managers, LLC | 176,286 | $14.2M | 0.31% | −2,650−1.5% | Reduced |
| LGT Group Foundation | 176,246 | $14.2M | 0.18% | +3,764+2.2% | Added |
| Thrivent Financial for Lutherans | 173,729 | $14.0M | 0.03% | −29,951−14.7% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 165,824 | $13.3M | 0.03% | +451+0.3% | Added |
| 2Xideas AG | 160,167 | $12.9M | 2.22% | −15,462−8.8% | Reduced |
| Nomura Asset Management Co Ltd | 153,459 | $12.3M | 0.03% | +6,517+4.4% | Added |
| KLP Kapitalforvaltning AS | 152,700 | $12.3M | 0.05% | +9,700+6.8% | Added |
| CIBC Asset Management Inc | 152,654 | $12.3M | 0.04% | −4,502−2.9% | Reduced |
| Fiera Capital Corp | 151,564 | $12.2M | 0.04% | +37,010+32.3% | Added |
| CIBC World Markets Inc. | 151,534 | $12.2M | 0.03% | +145,734+2,512.7% | Added |
| Mirae Asset Global Investments Co., Ltd. | 150,155 | $12.1M | 0.04% | +19,547+15.0% | Added |
| Umb Bank N A | 148,585 | $11.9M | 0.19% | +64,477+76.7% | Added |
| Fred Alger Management, LLC | 146,621 | $11.8M | 0.05% | +17,439+13.5% | Added |
| State of New Jersey Common Pension Fund D | 142,759 | $11.5M | 0.04% | −12,584−8.1% | Reduced |
| Resona Asset Management Co.,Ltd. | 139,660 | $11.2M | 0.06% | +10,322+8.0% | Added |
| Cetera Investment Advisers | 139,303 | $11.2M | 0.02% | −3,941−2.8% | Reduced |
| Envestnet Portfolio Solutions, Inc. | 136,756 | $11.0M | 0.04% | +18,337+15.5% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 134,949 | $10.8M | 0.06% | −2,717−2.0% | Reduced |
| Marshall Wace, LLP | 126,698 | $10.2M | 0.01% | +126,698 | New |
| First Citizens Bank & Trust Co | 125,889 | $10.1M | 0.18% | +23,043+22.4% | Added |
| Handelsbanken Fonder AB | 125,639 | $10.1M | 0.04% | +33,807+36.8% | Added |
| NEOS Investment Management LLC | 124,936 | $10.0M | 0.12% | +49,047+64.6% | Added |
| Arizona State Retirement System | 123,215 | $9.91M | 0.06% | +1,786+1.5% | Added |
| State of Michigan Retirement System | 121,800 | $9.79M | 0.05% | −2,100−1.7% | Reduced |
| Kelly Lawrence W & Associates Inc | 121,632 | $9.78M | 2.56% | −3,008−2.4% | Reduced |
| NFJ Investment Group, LLC | 119,943 | $9.64M | 0.34% | −305−0.3% | Reduced |
| CI Private Wealth, LLC | 118,470 | $9.52M | 0.01% | −14,126−10.7% | Reduced |
| Jennison Associates LLC | 118,153 | $9.50M | 0.01% | +970+0.8% | Added |