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, Q3 2025
Institutional positions in Costar Group, Inc. as of Sep 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
- 905
- +46 vs. Q2 2025
- Shares held
- 413.6M
- −5.67M (−1.4%) vs. Q2 2025
- Total value
- $34.9B
- +$1.15B (+3.4%) vs. Q2 2025
- New holders
- 107
- 364 more added
- Sold out
- 61
- 314 more reduced
14 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Envestnet Portfolio Solutions, Inc. | 122,408 | $10.3M | 0.04% | −14,348−10.5% | Reduced |
| 2Xideas AG | 124,002 | $10.5M | 2.21% | −36,165−22.6% | Reduced |
| Arizona State Retirement System | 124,860 | $10.5M | 0.06% | +1,645+1.3% | Added |
| Susquehanna International Group, LLP | 125,035 | $10.5M | 0.02% | +75,728+153.6% | Added |
| Vanderbilt University | 125,839 | $10.6M | 1.76% | +11,855+10.4% | Added |
| State of Tennessee, Treasury Department | 126,490 | $10.7M | 0.04% | +13,378+11.8% | Added |
| ING Groep NV | 128,052 | $10.8M | 0.06% | +121,807+1,950.5% | Added |
| Handelsbanken Fonder AB | 128,607 | $10.9M | 0.03% | +2,968+2.4% | Added |
| Resona Asset Management Co.,Ltd. | 130,989 | $11.0M | 0.05% | −8,671−6.2% | Reduced |
| Lansforsakringar Fondforvaltning AB (publ) | 134,761 | $11.4M | 0.06% | −188−0.1% | Reduced |
| HighTower Advisors, LLC | 136,084 | $11.5M | 0.01% | +89,864+194.4% | Added |
| Hood River Capital Management LLC | 138,064 | $11.6M | 0.14% | +138,064 | New |
| Credit Agricole S A | 138,372 | $11.7M | 0.04% | +138,372 | New |
| State of New Jersey Common Pension Fund D | 146,999 | $12.4M | 0.05% | +4,240+3.0% | Added |
| LPL Financial LLC | 149,190 | $12.6M | 0.00% | −310,773−67.6% | Reduced |
| Gillson Capital LP | 149,319 | $12.6M | 1.09% | −207,603−58.2% | Reduced |
| Landmark Investment Partners, L.P. | 149,385 | $12.6M | 10.32% | −126,765−45.9% | Reduced |
| Nomura Asset Management Co Ltd | 153,100 | $12.9M | 0.03% | −359−0.2% | Reduced |
| KLP Kapitalforvaltning AS | 153,300 | $12.9M | 0.05% | +600+0.4% | Added |
| CIBC Asset Management Inc | 153,709 | $13.0M | 0.04% | +1,055+0.7% | Added |
| Acadian Asset Management LLC | 162,515 | $13.7M | 0.02% | +162,515 | New |
| Cetera Investment Advisers | 162,697 | $13.7M | 0.02% | +23,394+16.8% | Added |
| Prana Capital Management, LP | 166,491 | $14.0M | 0.47% | +68,065+69.2% | Added |
| Prudential PLC | 167,992 | $14.2M | 0.10% | +74,534+79.8% | Added |
| Thrivent Financial for Lutherans | 170,590 | $14.4M | 0.03% | −3,139−1.8% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 170,973 | $14.4M | 0.03% | +5,149+3.1% | Added |
| Mirae Asset Global Investments Co., Ltd. | 171,380 | $14.5M | 0.05% | +21,225+14.1% | Added |
| Toronto Dominion Bank | 173,172 | $14.6M | 0.03% | −21,840−11.2% | Reduced |
| Badgley Phelps Wealth Managers, LLC | 175,301 | $14.8M | 0.31% | −985−0.6% | Reduced |
| Ossiam | 175,818 | $14.8M | 0.19% | +128,146+268.8% | Added |
| Fred Alger Management, LLC | 177,032 | $14.9M | 0.06% | +30,411+20.7% | Added |
| DekaBank Deutsche Girozentrale | 183,640 | $15.3M | 0.03% | 00.0% | Unchanged |
| Asset Management One Co.,Ltd. | 182,784 | $15.4M | 0.04% | +3,390+1.9% | Added |
| CIBC Bancorp USA Inc. | 185,242 | $15.6M | 0.09% | +185,242 | New |
| Treasurer of the State of North Carolina | 187,748 | $15.8M | 0.05% | −7,314−3.7% | Reduced |
| Cortland Associates Inc | 191,592 | $16.2M | 1.91% | +238+0.1% | Added |
| Clearstead Advisors, LLC | 192,584 | $16.2M | 0.24% | +4,310+2.3% | Added |
| Teachers Retirement System of the State of Kentucky | 196,362 | $16.6M | 0.13% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 197,534 | $16.7M | 0.05% | −3,808−1.9% | Reduced |
| Erste Asset Management GmbH | 200,000 | $16.8M | 0.16% | −11,000−5.2% | Reduced |
| APG Asset Management N.V. | 234,700 | $16.9M | 0.05% | +6,200+2.7% | Added |
| National Bank of Canada | 202,856 | $17.1M | 0.02% | −212,770−51.2% | Reduced |
| Danske Bank A/S | 203,100 | $17.1M | 0.04% | +8,668+4.5% | Added |
| Public Employees Retirement System of Ohio | 207,780 | $17.5M | 0.06% | +2,876+1.4% | Added |
| Foster Victor Wealth Advisors, LLC | 208,676 | $17.7M | 1.10% | +7,963+4.0% | Added |
| FIL Ltd | 214,248 | $18.1M | 0.01% | +34,626+19.3% | Added |
| Nicholas Company, Inc. | 214,314 | $18.1M | 0.31% | +450.0% | Added |
| NS Partners Ltd | 214,803 | $18.1M | 0.70% | +301+0.1% | Added |
| NEOS Investment Management LLC | 215,694 | $18.2M | 0.14% | +90,758+72.6% | Added |
| Public Employees Retirement Association of Colorado | 216,263 | $18.2M | 0.07% | +174,864+422.4% | Added |
| Chevy Chase Trust Holdings, Inc. | 218,972 | $18.5M | 0.05% | −4,077−1.8% | Reduced |
| Intrinsic Edge Capital Management LLC | 224,297 | $18.9M | 2.87% | −39,687−15.0% | Reduced |
| Umb Bank N A | 225,305 | $19.0M | 0.28% | +76,720+51.6% | Added |
| Tremblant Capital Group | 225,928 | $19.1M | 1.97% | +26,047+13.0% | Added |
| New York State Common Retirement Fund | 227,825 | $19.2M | 0.02% | +7,700+3.5% | Added |
| Kornitzer Capital Management Inc | 231,626 | $19.5M | 0.39% | −38,230−14.2% | Reduced |
| Fiera Capital Corp | 234,331 | $19.8M | 0.06% | +82,767+54.6% | Added |
| Prudential Financial Inc | 239,893 | $20.2M | 0.02% | −4,814−2.0% | Reduced |
| Korea Investment CORP | 245,000 | $20.7M | 0.04% | +61,650+33.6% | Added |
| State of Wisconsin Investment Board | 251,783 | $21.2M | 0.05% | +27,366+12.2% | Added |
| Manufacturers Life Insurance Company, The | 255,127 | $21.5M | 0.02% | −8,493−3.2% | Reduced |
| Motley Fool Wealth Management, LLC | 255,853 | $21.6M | 1.46% | −35,342−12.1% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 258,807 | $21.8M | 0.04% | +5,177+2.0% | Added |
| Tran Capital Management, L.P. | 265,590 | $22.4M | 2.68% | −20,530−7.2% | Reduced |
| Aviva PLC | 268,250 | $22.6M | 0.04% | +16,195+6.4% | Added |
| Granahan Investment Management Inc | 270,166 | $22.8M | 0.93% | −30,766−10.2% | Reduced |
| Ulysses Management LLC | 270,500 | $22.8M | 5.31% | 00.0% | Unchanged |
| Stifel Financial Corp | 270,670 | $22.8M | 0.02% | −21,634−7.4% | Reduced |
| Oppenheimer Asset Management Inc. | 274,745 | $23.2M | 0.25% | −11,765−4.1% | Reduced |
| Gilder Gagnon Howe & Co LLC | 278,503 | $23.5M | 0.24% | +33,071+13.5% | Added |
| Ashford Capital Management Inc | 280,738 | $23.7M | 2.64% | −10,365−3.6% | Reduced |
| Allspring Global Investments Holdings, LLC | 289,270 | $24.1M | 0.04% | −37,379−11.4% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 294,546 | $24.9M | 0.05% | −167,379−36.2% | Reduced |
| Swedbank AB | 302,360 | $25.5M | 0.03% | +52,433+21.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 310,993 | $26.2M | 0.04% | −26,663−7.9% | Reduced |
| Ninety One UK Ltd | 311,414 | $26.3M | 0.06% | −8,601−2.7% | Reduced |
| Standard Life Aberdeen plc | 311,627 | $26.3M | 0.04% | +52,390+20.2% | Added |
| AQR Capital Management LLC | 323,743 | $27.1M | 0.02% | −41,115−11.3% | Reduced |
| New York State Teachers Retirement System | 323,437 | $27.3M | 0.05% | +1,605+0.5% | Added |
| Victory Capital Management Inc | 327,557 | $27.6M | 0.02% | −8,295−2.5% | Reduced |
| Sone Capital Management, LLC | 333,912 | $28.2M | 2.36% | +218,791+190.1% | Added |
| Petrus Trust Company, LTA | 336,547 | $28.4M | 3.11% | +9,450+2.9% | Added |
| Aureus Asset Management, LLC | 339,077 | $28.6M | 1.86% | +85,348+33.6% | Added |
| LGT Group Foundation | 343,090 | $28.6M | 0.33% | +166,844+94.7% | Added |
| Caden Capital Partners, LP | 349,501 | $29.5M | 11.95% | −30,000−7.9% | Reduced |
| Ycg, LLC | 359,321 | $30.3M | 2.28% | −79,490−18.1% | Reduced |
| AXA Investment Managers S.A. | 370,740 | $31.3M | 0.08% | +370,740 | New |
| NZS Capital, LLC | 373,432 | $31.5M | 0.96% | +22,905+6.5% | Added |
| Jupiter Asset Management Ltd | 383,230 | $32.3M | 0.28% | +383,230 | New |
| Adage Capital Partners GP, L.L.C. | 385,700 | $32.5M | 0.05% | −700−0.2% | Reduced |
| State Board of Administration of Florida Retirement System | 391,353 | $33.0M | 0.06% | −18,352−4.5% | Reduced |
| Clearbridge Investments, LLC | 399,113 | $33.7M | 0.03% | +901+0.2% | Added |
| Quantum Capital Management, LLC | 402,895 | $34.0M | 3.73% | −1,070−0.3% | Reduced |
| Royal London Asset Management Ltd | 407,064 | $34.3M | 0.07% | +2,189+0.5% | Added |
| Millennium Management LLC | 408,355 | $34.5M | 0.03% | +301,038+280.5% | Added |
| Neuberger Berman Group LLC | 421,793 | $35.6M | 0.03% | +156,437+59.0% | Added |
| Visualize Group LP | 428,838 | $36.2M | 12.12% | +349,872+443.1% | Added |
| Great West Life Assurance Co | 430,259 | $36.2M | 0.05% | +20,558+5.0% | Added |
| Ironvine Capital Partners, LLC | 430,334 | $36.3M | 3.61% | −10,080−2.3% | Reduced |
| Geneva Capital Management LLC | 436,009 | $36.8M | 0.63% | −11,640−2.6% | Reduced |