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 |
|---|---|---|---|---|---|
| Mitsubishi UFJ Trust & Banking Corp | 466,278 | $39.3M | 0.09% | −10,397−2.2% | Reduced |
| Alliancebernstein L.P. | 464,823 | $39.2M | 0.01% | +4,152+0.9% | Added |
| TD Asset Management Inc | 455,430 | $38.4M | 0.03% | −226,787−33.2% | Reduced |
| Arrowstreet Capital, Limited Partnership | 453,897 | $38.3M | 0.02% | −105,049−18.8% | Reduced |
| No Street GP LP | 450,000 | $38.0M | 2.52% | +20,000+4.7% | Added |
| Geneva Capital Management LLC | 436,009 | $36.8M | 0.63% | −11,640−2.6% | Reduced |
| Ironvine Capital Partners, LLC | 430,334 | $36.3M | 3.61% | −10,080−2.3% | Reduced |
| Great West Life Assurance Co | 430,259 | $36.2M | 0.05% | +20,558+5.0% | Added |
| Visualize Group LP | 428,838 | $36.2M | 12.12% | +349,872+443.1% | Added |
| Neuberger Berman Group LLC | 421,793 | $35.6M | 0.03% | +156,437+59.0% | Added |
| Millennium Management LLC | 408,355 | $34.5M | 0.03% | +301,038+280.5% | Added |
| Royal London Asset Management Ltd | 407,064 | $34.3M | 0.07% | +2,189+0.5% | Added |
| Quantum Capital Management, LLC | 402,895 | $34.0M | 3.73% | −1,070−0.3% | Reduced |
| Clearbridge Investments, LLC | 399,113 | $33.7M | 0.03% | +901+0.2% | Added |
| State Board of Administration of Florida Retirement System | 391,353 | $33.0M | 0.06% | −18,352−4.5% | Reduced |
| Adage Capital Partners GP, L.L.C. | 385,700 | $32.5M | 0.05% | −700−0.2% | Reduced |
| Jupiter Asset Management Ltd | 383,230 | $32.3M | 0.28% | +383,230 | New |
| NZS Capital, LLC | 373,432 | $31.5M | 0.96% | +22,905+6.5% | Added |
| AXA Investment Managers S.A. | 370,740 | $31.3M | 0.08% | +370,740 | New |
| Ycg, LLC | 359,321 | $30.3M | 2.28% | −79,490−18.1% | Reduced |
| Caden Capital Partners, LP | 349,501 | $29.5M | 11.95% | −30,000−7.9% | Reduced |
| LGT Group Foundation | 343,090 | $28.6M | 0.33% | +166,844+94.7% | Added |
| Aureus Asset Management, LLC | 339,077 | $28.6M | 1.86% | +85,348+33.6% | Added |
| Petrus Trust Company, LTA | 336,547 | $28.4M | 3.11% | +9,450+2.9% | Added |
| Sone Capital Management, LLC | 333,912 | $28.2M | 2.36% | +218,791+190.1% | Added |
| Victory Capital Management Inc | 327,557 | $27.6M | 0.02% | −8,295−2.5% | Reduced |
| New York State Teachers Retirement System | 323,437 | $27.3M | 0.05% | +1,605+0.5% | Added |
| AQR Capital Management LLC | 323,743 | $27.1M | 0.02% | −41,115−11.3% | Reduced |
| Standard Life Aberdeen plc | 311,627 | $26.3M | 0.04% | +52,390+20.2% | Added |
| Ninety One UK Ltd | 311,414 | $26.3M | 0.06% | −8,601−2.7% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 310,993 | $26.2M | 0.04% | −26,663−7.9% | Reduced |
| Swedbank AB | 302,360 | $25.5M | 0.03% | +52,433+21.0% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 294,546 | $24.9M | 0.05% | −167,379−36.2% | Reduced |
| Allspring Global Investments Holdings, LLC | 289,270 | $24.1M | 0.04% | −37,379−11.4% | Reduced |
| Ashford Capital Management Inc | 280,738 | $23.7M | 2.64% | −10,365−3.6% | Reduced |
| Gilder Gagnon Howe & Co LLC | 278,503 | $23.5M | 0.24% | +33,071+13.5% | Added |
| Oppenheimer Asset Management Inc. | 274,745 | $23.2M | 0.25% | −11,765−4.1% | Reduced |
| Stifel Financial Corp | 270,670 | $22.8M | 0.02% | −21,634−7.4% | Reduced |
| Ulysses Management LLC | 270,500 | $22.8M | 5.31% | 00.0% | Unchanged |
| Granahan Investment Management Inc | 270,166 | $22.8M | 0.93% | −30,766−10.2% | Reduced |
| Aviva PLC | 268,250 | $22.6M | 0.04% | +16,195+6.4% | Added |
| Tran Capital Management, L.P. | 265,590 | $22.4M | 2.68% | −20,530−7.2% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 258,807 | $21.8M | 0.04% | +5,177+2.0% | Added |
| Motley Fool Wealth Management, LLC | 255,853 | $21.6M | 1.46% | −35,342−12.1% | Reduced |
| Manufacturers Life Insurance Company, The | 255,127 | $21.5M | 0.02% | −8,493−3.2% | Reduced |
| State of Wisconsin Investment Board | 251,783 | $21.2M | 0.05% | +27,366+12.2% | Added |
| Korea Investment CORP | 245,000 | $20.7M | 0.04% | +61,650+33.6% | Added |
| Prudential Financial Inc | 239,893 | $20.2M | 0.02% | −4,814−2.0% | Reduced |
| Fiera Capital Corp | 234,331 | $19.8M | 0.06% | +82,767+54.6% | Added |
| Kornitzer Capital Management Inc | 231,626 | $19.5M | 0.39% | −38,230−14.2% | Reduced |
| New York State Common Retirement Fund | 227,825 | $19.2M | 0.02% | +7,700+3.5% | Added |
| Tremblant Capital Group | 225,928 | $19.1M | 1.97% | +26,047+13.0% | Added |
| Umb Bank N A | 225,305 | $19.0M | 0.28% | +76,720+51.6% | Added |
| Intrinsic Edge Capital Management LLC | 224,297 | $18.9M | 2.87% | −39,687−15.0% | Reduced |
| Chevy Chase Trust Holdings, Inc. | 218,972 | $18.5M | 0.05% | −4,077−1.8% | Reduced |
| Public Employees Retirement Association of Colorado | 216,263 | $18.2M | 0.07% | +174,864+422.4% | Added |
| NEOS Investment Management LLC | 215,694 | $18.2M | 0.14% | +90,758+72.6% | Added |
| NS Partners Ltd | 214,803 | $18.1M | 0.70% | +301+0.1% | Added |
| Nicholas Company, Inc. | 214,314 | $18.1M | 0.31% | +450.0% | Added |
| FIL Ltd | 214,248 | $18.1M | 0.01% | +34,626+19.3% | Added |
| Foster Victor Wealth Advisors, LLC | 208,676 | $17.7M | 1.10% | +7,963+4.0% | Added |
| Public Employees Retirement System of Ohio | 207,780 | $17.5M | 0.06% | +2,876+1.4% | Added |
| Danske Bank A/S | 203,100 | $17.1M | 0.04% | +8,668+4.5% | Added |
| National Bank of Canada | 202,856 | $17.1M | 0.02% | −212,770−51.2% | Reduced |
| APG Asset Management N.V. | 234,700 | $16.9M | 0.05% | +6,200+2.7% | Added |
| Erste Asset Management GmbH | 200,000 | $16.8M | 0.16% | −11,000−5.2% | Reduced |
| Rafferty Asset Management, LLC | 197,534 | $16.7M | 0.05% | −3,808−1.9% | Reduced |
| Teachers Retirement System of the State of Kentucky | 196,362 | $16.6M | 0.13% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 192,584 | $16.2M | 0.24% | +4,310+2.3% | Added |
| Cortland Associates Inc | 191,592 | $16.2M | 1.91% | +238+0.1% | Added |
| Treasurer of the State of North Carolina | 187,748 | $15.8M | 0.05% | −7,314−3.7% | Reduced |
| CIBC Bancorp USA Inc. | 185,242 | $15.6M | 0.09% | +185,242 | New |
| Asset Management One Co.,Ltd. | 182,784 | $15.4M | 0.04% | +3,390+1.9% | Added |
| DekaBank Deutsche Girozentrale | 183,640 | $15.3M | 0.03% | 00.0% | Unchanged |
| Fred Alger Management, LLC | 177,032 | $14.9M | 0.06% | +30,411+20.7% | Added |
| Ossiam | 175,818 | $14.8M | 0.19% | +128,146+268.8% | Added |
| Badgley Phelps Wealth Managers, LLC | 175,301 | $14.8M | 0.31% | −985−0.6% | Reduced |
| Toronto Dominion Bank | 173,172 | $14.6M | 0.03% | −21,840−11.2% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 171,380 | $14.5M | 0.05% | +21,225+14.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 170,973 | $14.4M | 0.03% | +5,149+3.1% | Added |
| Thrivent Financial for Lutherans | 170,590 | $14.4M | 0.03% | −3,139−1.8% | Reduced |
| Prudential PLC | 167,992 | $14.2M | 0.10% | +74,534+79.8% | Added |
| Prana Capital Management, LP | 166,491 | $14.0M | 0.47% | +68,065+69.2% | Added |
| Cetera Investment Advisers | 162,697 | $13.7M | 0.02% | +23,394+16.8% | Added |
| Acadian Asset Management LLC | 162,515 | $13.7M | 0.02% | +162,515 | New |
| CIBC Asset Management Inc | 153,709 | $13.0M | 0.04% | +1,055+0.7% | Added |
| KLP Kapitalforvaltning AS | 153,300 | $12.9M | 0.05% | +600+0.4% | Added |
| Nomura Asset Management Co Ltd | 153,100 | $12.9M | 0.03% | −359−0.2% | Reduced |
| Landmark Investment Partners, L.P. | 149,385 | $12.6M | 10.32% | −126,765−45.9% | Reduced |
| Gillson Capital LP | 149,319 | $12.6M | 1.09% | −207,603−58.2% | Reduced |
| LPL Financial LLC | 149,190 | $12.6M | 0.00% | −310,773−67.6% | Reduced |
| State of New Jersey Common Pension Fund D | 146,999 | $12.4M | 0.05% | +4,240+3.0% | Added |
| Credit Agricole S A | 138,372 | $11.7M | 0.04% | +138,372 | New |
| Hood River Capital Management LLC | 138,064 | $11.6M | 0.14% | +138,064 | New |
| HighTower Advisors, LLC | 136,084 | $11.5M | 0.01% | +89,864+194.4% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 134,761 | $11.4M | 0.06% | −188−0.1% | Reduced |
| Resona Asset Management Co.,Ltd. | 130,989 | $11.0M | 0.05% | −8,671−6.2% | Reduced |
| Handelsbanken Fonder AB | 128,607 | $10.9M | 0.03% | +2,968+2.4% | Added |
| ING Groep NV | 128,052 | $10.8M | 0.06% | +121,807+1,950.5% | Added |
| State of Tennessee, Treasury Department | 126,490 | $10.7M | 0.04% | +13,378+11.8% | Added |