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, Q4 2025
Institutional positions in Costar Group, Inc. as of Dec 31, 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
- 847
- −40 vs. Q3 2025
- Shares held
- 422.7M
- +11.7M (+2.8%) vs. Q3 2025
- Total value
- $28.4B
- −$6.23B (−18.0%) vs. Q3 2025
- New holders
- 103
- 273 more added
- Sold out
- 143
- 388 more reduced
18 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Glenmede Trust Co NA | 77,034 | $5.18M | 0.02% | +77,034 | New |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 77,670 | $5.22M | 0.04% | +1,100+1.4% | Added |
| Storebrand Asset Management AS | 77,732 | $5.23M | 0.01% | −4,482−5.5% | Reduced |
| Rakuten Investment Management, Inc. | 78,622 | $5.31M | 0.02% | +68,566+681.8% | Added |
| Amalgamated Bank | 79,823 | $5.37M | 0.04% | −2,032−2.5% | Reduced |
| STRS Ohio | 81,003 | $5.45M | 0.02% | +180.0% | Added |
| Bank of Nova Scotia | 81,035 | $5.45M | 0.01% | +21,076+35.2% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 81,263 | $5.46M | 0.02% | −1,744−2.1% | Reduced |
| Truist Financial Corp | 82,238 | $5.53M | 0.01% | −24,490−22.9% | Reduced |
| Forsta Ap-Fonden | 82,400 | $5.54M | 0.03% | −2,800−3.3% | Reduced |
| IFM Investors Pty Ltd | 82,958 | $5.58M | 0.05% | +2,483+3.1% | Added |
| Voya Investment Management LLC | 84,683 | $5.69M | 0.01% | −1,761,603−95.4% | Reduced |
| DnB Asset Management AS | 85,207 | $5.73M | 0.02% | +6,377+8.1% | Added |
| CI Private Wealth, LLC | 87,000 | $5.85M | 0.01% | −25,361−22.6% | Reduced |
| Itau Unibanco Holding S.A. | 87,687 | $5.90M | 0.15% | +4,022+4.8% | Added |
| GF Fund Management Co. Ltd. | 89,399 | $6.01M | 0.10% | +5,375+6.4% | Added |
| Retirement Systems of Alabama | 90,161 | $6.06M | 0.02% | −211−0.2% | Reduced |
| Cerity Partners LLC | 91,547 | $6.16M | 0.01% | +27,077+42.0% | Added |
| Granahan Investment Management Inc | 91,929 | $6.18M | 0.26% | −178,237−66.0% | Reduced |
| MML Investors Services, LLC | 92,277 | $6.20M | 0.02% | +325+0.4% | Added |
| KBC Group NV | 93,535 | $6.29M | 0.01% | −3,615−3.7% | Reduced |
| Equitable Trust Co | 93,581 | $6.29M | 0.28% | −15,447−14.2% | Reduced |
| Azimuth Capital Investment Management LLC | 94,063 | $6.32M | 0.23% | −8,430−8.2% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 98,584 | $6.63M | 0.03% | −3,150−3.1% | Reduced |
| Greenvale Capital LLP | 100,000 | $6.72M | 0.63% | +100,000 | New |
| MetLife Investment Management | 103,990 | $6.99M | 0.03% | −3,471−3.2% | Reduced |
| Abn Amro Investment Solutions | 104,344 | $7.02M | 0.10% | +42,015+67.4% | Added |
| Kelly Lawrence W & Associates Inc | 106,284 | $7.15M | 1.74% | −12,858−10.8% | Reduced |
| State of Tennessee, Treasury Department | 116,497 | $7.16M | 0.02% | −9,993−7.9% | Reduced |
| Public Sector Pension Investment Board | 107,909 | $7.26M | 0.02% | +16,519+18.1% | Added |
| 2Xideas AG | 108,267 | $7.28M | 2.04% | −15,735−12.7% | Reduced |
| Night Owl Capital Management, LLC | 108,615 | $7.30M | 0.80% | +904+0.8% | Added |
| Guggenheim Capital LLC | 108,846 | $7.32M | 0.05% | −912−0.8% | Reduced |
| Czech National Bank | 111,755 | $7.51M | 0.05% | +4,156+3.9% | Added |
| Fred Alger Management, LLC | 112,357 | $7.55M | 0.03% | −64,675−36.5% | Reduced |
| Nissay Asset Management Corp | 114,942 | $7.73M | 0.04% | +5,827+5.3% | Added |
| Arizona State Retirement System | 116,425 | $7.83M | 0.04% | −8,435−6.8% | Reduced |
| State of Michigan Retirement System | 116,800 | $7.85M | 0.04% | −4,900−4.0% | Reduced |
| LPL Financial LLC | 117,448 | $7.90M | 0.00% | −31,742−21.3% | Reduced |
| Clearline Capital LP | 118,041 | $7.94M | 0.60% | +118,041 | New |
| Handelsbanken Fonder AB | 118,497 | $7.97M | 0.02% | −10,110−7.9% | Reduced |
| Thrivent Financial for Lutherans | 121,360 | $8.16M | 0.01% | −49,230−28.9% | Reduced |
| Daiwa Securities Group Inc. | 124,503 | $8.37M | 0.03% | +10,151+8.9% | Added |
| Lighthouse Investment Partners, LLC | 124,519 | $8.37M | 0.28% | +124,519 | New |
| Resona Asset Management Co.,Ltd. | 125,277 | $8.43M | 0.04% | −5,712−4.4% | Reduced |
| Public Employees Retirement System of Ohio | 126,840 | $8.53M | 0.03% | −80,940−39.0% | Reduced |
| Vanderbilt University | 127,260 | $8.56M | 1.46% | +1,421+1.1% | Added |
| HighTower Advisors, LLC | 128,451 | $8.64M | 0.01% | −7,633−5.6% | Reduced |
| Gotham Asset Management, LLC | 130,347 | $8.76M | 0.03% | +107,696+475.5% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 136,026 | $9.15M | 0.05% | +1,265+0.9% | Added |
| ExodusPoint Capital Management, LP | 139,296 | $9.37M | 0.10% | +139,296 | New |
| State of New Jersey Common Pension Fund D | 145,258 | $9.77M | 0.04% | −1,741−1.2% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 146,546 | $9.85M | 0.02% | −148,000−50.2% | Reduced |
| PensionDanmark Pensionsforsikringsaktieselskab | 147,170 | $9.90M | 0.09% | +147,170 | New |
| Primecap Management Co | 151,000 | $10.2M | 0.01% | +53,000+54.1% | Added |
| Cetera Investment Advisers | 151,023 | $10.2M | 0.01% | −11,674−7.2% | Reduced |
| Toronto Dominion Bank | 152,163 | $10.2M | 0.02% | −21,009−12.1% | Reduced |
| KLP Kapitalforvaltning AS | 153,300 | $10.3M | 0.04% | 00.0% | Unchanged |
| Landmark Investment Partners, L.P. | 154,480 | $10.4M | 8.90% | +5,095+3.4% | Added |
| Nomura Asset Management Co Ltd | 155,881 | $10.5M | 0.03% | +2,781+1.8% | Added |
| Clearstead Advisors, LLC | 160,512 | $10.8M | 0.14% | −32,072−16.7% | Reduced |
| La Banque Postale Asset Management SA | 164,851 | $11.1M | 0.13% | +120,481+271.5% | Added |
| Jennison Associates LLC | 164,960 | $11.1M | 0.01% | +47,665+40.6% | Added |
| Credit Agricole S A | 165,698 | $11.1M | 0.03% | +27,326+19.7% | Added |
| Badgley Phelps Wealth Managers, LLC | 166,253 | $11.2M | 0.20% | −9,048−5.2% | Reduced |
| Neuberger Berman Group LLC | 169,667 | $11.4M | 0.01% | −252,126−59.8% | Reduced |
| Ossiam | 173,867 | $11.7M | 0.23% | −1,951−1.1% | Reduced |
| Treasurer of the State of North Carolina | 174,964 | $11.8M | 0.04% | −12,784−6.8% | Reduced |
| BSN Capital Partners Ltd | 150,857 | $11.8M | 0.56% | +150,857 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 177,966 | $12.0M | 0.03% | +6,993+4.1% | Added |
| Allspring Global Investments Holdings, LLC | 182,879 | $12.0M | 0.02% | −106,391−36.8% | Reduced |
| Cortland Associates Inc | 183,144 | $12.3M | 1.55% | −8,448−4.4% | Reduced |
| Asset Management One Co.,Ltd. | 183,391 | $12.4M | 0.03% | +607+0.3% | Added |
| APG Asset Management N.V. | 218,356 | $12.5M | 0.04% | −16,344−7.0% | Reduced |
| CIBC World Markets Corp | 186,141 | $12.5M | 0.06% | +186,141 | New |
| Foster Victor Wealth Advisors, LLC | 197,979 | $12.9M | 0.75% | −10,697−5.1% | Reduced |
| Susquehanna International Group, LLP | 194,684 | $13.1M | 0.02% | +69,649+55.7% | Added |
| CIBC Asset Management Inc | 199,891 | $13.4M | 0.03% | +46,182+30.0% | Added |
| Freestone Grove Partners LP | 201,205 | $13.5M | 0.10% | +157,142+356.6% | Added |
| Quantinno Capital Management LP | 202,148 | $13.6M | 0.03% | +84,437+71.7% | Added |
| Motley Fool Wealth Management, LLC | 203,448 | $13.7M | 1.06% | −52,405−20.5% | Reduced |
| Tudor Investment Corp Et Al | 205,000 | $13.8M | 0.08% | +205,000 | New |
| Korea Investment CORP | 205,123 | $13.8M | 0.03% | −39,877−16.3% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 210,095 | $14.1M | 0.04% | +38,715+22.6% | Added |
| Prudential Financial Inc | 211,975 | $14.3M | 0.02% | −27,918−11.6% | Reduced |
| Nicholas Company, Inc. | 214,249 | $14.4M | 0.25% | −650.0% | Reduced |
| Visualize Group LP | 214,388 | $14.4M | 5.38% | −214,450−50.0% | Reduced |
| NS Partners Ltd | 214,981 | $14.5M | 0.57% | +178+0.1% | Added |
| Chevy Chase Trust Holdings, Inc. | 215,088 | $14.5M | 0.04% | −3,884−1.8% | Reduced |
| Public Employees Retirement Association of Colorado | 216,263 | $14.5M | 0.05% | 00.0% | Unchanged |
| Danske Bank A/S | 218,361 | $14.7M | 0.03% | +15,261+7.5% | Added |
| Quantum Capital Management, LLC | 218,583 | $14.7M | 1.70% | −184,312−45.7% | Reduced |
| Kornitzer Capital Management Inc | 224,416 | $15.1M | 0.31% | −7,210−3.1% | Reduced |
| Umb Bank N A | 224,611 | $15.1M | 0.20% | −694−0.3% | Reduced |
| Man Group plc | 225,253 | $15.1M | 0.03% | +105,994+88.9% | Added |
| New York State Common Retirement Fund | 227,825 | $15.3M | 0.02% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 228,542 | $15.4M | 0.03% | −23,241−9.2% | Reduced |
| Tran Capital Management, L.P. | 233,303 | $15.7M | 1.88% | −32,287−12.2% | Reduced |
| SG Americas Securities, LLC | 234,893 | $15.8M | 0.02% | +230,378+5,102.5% | Added |
| Great West Life Assurance Co | 236,960 | $15.9M | 0.03% | −193,299−44.9% | Reduced |