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 |
|---|---|---|---|---|---|
| Vanderbilt University | 127,260 | $8.56M | 1.46% | +1,421+1.1% | Added |
| Public Employees Retirement System of Ohio | 126,840 | $8.53M | 0.03% | −80,940−39.0% | Reduced |
| Resona Asset Management Co.,Ltd. | 125,277 | $8.43M | 0.04% | −5,712−4.4% | Reduced |
| Lighthouse Investment Partners, LLC | 124,519 | $8.37M | 0.28% | +124,519 | New |
| Daiwa Securities Group Inc. | 124,503 | $8.37M | 0.03% | +10,151+8.9% | Added |
| Thrivent Financial for Lutherans | 121,360 | $8.16M | 0.01% | −49,230−28.9% | Reduced |
| Handelsbanken Fonder AB | 118,497 | $7.97M | 0.02% | −10,110−7.9% | Reduced |
| Clearline Capital LP | 118,041 | $7.94M | 0.60% | +118,041 | New |
| LPL Financial LLC | 117,448 | $7.90M | 0.00% | −31,742−21.3% | Reduced |
| State of Michigan Retirement System | 116,800 | $7.85M | 0.04% | −4,900−4.0% | Reduced |
| Arizona State Retirement System | 116,425 | $7.83M | 0.04% | −8,435−6.8% | Reduced |
| Nissay Asset Management Corp | 114,942 | $7.73M | 0.04% | +5,827+5.3% | Added |
| Fred Alger Management, LLC | 112,357 | $7.55M | 0.03% | −64,675−36.5% | Reduced |
| Czech National Bank | 111,755 | $7.51M | 0.05% | +4,156+3.9% | Added |
| Guggenheim Capital LLC | 108,846 | $7.32M | 0.05% | −912−0.8% | Reduced |
| Night Owl Capital Management, LLC | 108,615 | $7.30M | 0.80% | +904+0.8% | Added |
| 2Xideas AG | 108,267 | $7.28M | 2.04% | −15,735−12.7% | Reduced |
| Public Sector Pension Investment Board | 107,909 | $7.26M | 0.02% | +16,519+18.1% | Added |
| State of Tennessee, Treasury Department | 116,497 | $7.16M | 0.02% | −9,993−7.9% | Reduced |
| Kelly Lawrence W & Associates Inc | 106,284 | $7.15M | 1.74% | −12,858−10.8% | Reduced |
| Abn Amro Investment Solutions | 104,344 | $7.02M | 0.10% | +42,015+67.4% | Added |
| MetLife Investment Management | 103,990 | $6.99M | 0.03% | −3,471−3.2% | Reduced |
| Greenvale Capital LLP | 100,000 | $6.72M | 0.63% | +100,000 | New |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 98,584 | $6.63M | 0.03% | −3,150−3.1% | Reduced |
| Azimuth Capital Investment Management LLC | 94,063 | $6.32M | 0.23% | −8,430−8.2% | Reduced |
| Equitable Trust Co | 93,581 | $6.29M | 0.28% | −15,447−14.2% | Reduced |
| KBC Group NV | 93,535 | $6.29M | 0.01% | −3,615−3.7% | Reduced |
| MML Investors Services, LLC | 92,277 | $6.20M | 0.02% | +325+0.4% | Added |
| Granahan Investment Management Inc | 91,929 | $6.18M | 0.26% | −178,237−66.0% | Reduced |
| Cerity Partners LLC | 91,547 | $6.16M | 0.01% | +27,077+42.0% | Added |
| Retirement Systems of Alabama | 90,161 | $6.06M | 0.02% | −211−0.2% | Reduced |
| GF Fund Management Co. Ltd. | 89,399 | $6.01M | 0.10% | +5,375+6.4% | Added |
| Itau Unibanco Holding S.A. | 87,687 | $5.90M | 0.15% | +4,022+4.8% | Added |
| CI Private Wealth, LLC | 87,000 | $5.85M | 0.01% | −25,361−22.6% | Reduced |
| DnB Asset Management AS | 85,207 | $5.73M | 0.02% | +6,377+8.1% | Added |
| Voya Investment Management LLC | 84,683 | $5.69M | 0.01% | −1,761,603−95.4% | Reduced |
| IFM Investors Pty Ltd | 82,958 | $5.58M | 0.05% | +2,483+3.1% | Added |
| Forsta Ap-Fonden | 82,400 | $5.54M | 0.03% | −2,800−3.3% | Reduced |
| Truist Financial Corp | 82,238 | $5.53M | 0.01% | −24,490−22.9% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 81,263 | $5.46M | 0.02% | −1,744−2.1% | Reduced |
| Bank of Nova Scotia | 81,035 | $5.45M | 0.01% | +21,076+35.2% | Added |
| STRS Ohio | 81,003 | $5.45M | 0.02% | +180.0% | Added |
| Amalgamated Bank | 79,823 | $5.37M | 0.04% | −2,032−2.5% | Reduced |
| Rakuten Investment Management, Inc. | 78,622 | $5.31M | 0.02% | +68,566+681.8% | Added |
| Storebrand Asset Management AS | 77,732 | $5.23M | 0.01% | −4,482−5.5% | Reduced |
| Fjarde Ap-Fonden /Fourth Swedish National Pension Fund | 77,670 | $5.22M | 0.04% | +1,100+1.4% | Added |
| Glenmede Trust Co NA | 77,034 | $5.18M | 0.02% | +77,034 | New |
| American Century Companies Inc | 76,595 | $5.15M | 0.00% | −474,928−86.1% | Reduced |
| The PNC Financial Services Group, Inc. | 76,253 | $5.13M | 0.00% | −20,720−21.4% | Reduced |
| British Columbia Investment Management Corp | 75,138 | $5.05M | 0.03% | +14,505+23.9% | Added |
| USS Investment Management Ltd | 74,622 | $5.02M | 0.02% | +952+1.3% | Added |
| HB Wealth Management, LLC | 73,804 | $4.96M | 0.03% | −3,095−4.0% | Reduced |
| Woodline Partners LP | 72,309 | $4.86M | 0.02% | +16,319+29.1% | Added |
| Los Angeles Capital Management LLC | 69,363 | $4.83M | 0.02% | −12,351−15.1% | Reduced |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 71,590 | $4.81M | 0.04% | +1,227+1.7% | Added |
| Blue Zone Wealth Advisors, LLC | 71,556 | $4.81M | 0.92% | +1,226+1.7% | Added |
| Louisbourg Investments Inc. | 90,322 | $4.74M | 0.95% | +74,637+475.8% | Added |
| Hantz Financial Services, Inc. | 70,445 | $4.74M | 0.07% | −17,794−20.2% | Reduced |
| Macquarie Group Ltd | 69,698 | $4.69M | 0.02% | −4,197,458−98.4% | Reduced |
| Dash Acquisitions Inc. | 88,769 | $4.65M | 0.97% | +7,330+9.0% | Added |
| Utah Retirement Systems | 68,915 | $4.63M | 0.04% | 00.0% | Unchanged |
| Robeco Institutional Asset Management B.V. | 68,155 | $4.58M | 0.01% | −6,513−8.7% | Reduced |
| Xponance, Inc. | 67,203 | $4.52M | 0.03% | +3,897+6.2% | Added |
| Exchange Traded Concepts, LLC | 66,897 | $4.50M | 0.04% | +21,017+45.8% | Added |
| Boston Private Wealth LLC | 66,410 | $4.47M | 0.26% | +32,923+98.3% | Added |
| Platinum Investment Management Ltd | 65,000 | $4.37M | 1.01% | +10,000+18.2% | Added |
| ING Groep NV | 64,844 | $4.36M | 0.03% | −63,208−49.4% | Reduced |
| US Bancorp | 64,485 | $4.34M | 0.01% | −3,575−5.3% | Reduced |
| Pacer Advisors, Inc. | 64,330 | $4.33M | 0.01% | +1,029+1.6% | Added |
| Eurizon Capital SGR S.p.A. | 64,276 | $4.32M | 0.01% | +64,276 | New |
| Comerica Bank | 64,101 | $4.31M | 0.02% | −12,812−16.7% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 63,857 | $4.29M | 0.04% | −3,335−5.0% | Reduced |
| Employees Retirement System of Texas | 63,224 | $4.25M | 0.03% | +21,852+52.8% | Added |
| Solidarilty Wealth, LLC | 60,669 | $4.08M | 0.83% | +4,553+8.1% | Added |
| Needham Investment Management LLC | 60,500 | $4.07M | 0.26% | +57,250+1,761.5% | Added |
| Mutual of America Capital Management LLC | 59,579 | $4.01M | 0.04% | +5,869+10.9% | Added |
| New York Life Investment Management LLC | 57,924 | $3.89M | 0.03% | +576+1.0% | Added |
| Van Eck Associates Corp | 56,524 | $3.80M | 0.00% | −1,337−2.3% | Reduced |
| Allianz SE | 56,052 | $3.77M | 0.05% | 00.0% | Unchanged |
| Regions Financial Corp | 55,929 | $3.76M | 0.02% | −3,064−5.2% | Reduced |
| Hahn Capital Management LLC | 55,848 | $3.76M | 2.03% | −3,809−6.4% | Reduced |
| Creative Planning | 54,490 | $3.66M | 0.00% | +4,066+8.1% | Added |
| Wellington Management Group LLP | 53,668 | $3.61M | 0.00% | −12,746−19.2% | Reduced |
| iA Global Asset Management Inc. | 52,680 | $3.54M | 0.05% | +3,631+7.4% | Added |
| LGT Fund Management Co Ltd. | 50,530 | $3.43M | 0.27% | −1,531−2.9% | Reduced |
| Louisiana State Employees Retirement System | 50,000 | $3.36M | 0.06% | −3,100−5.8% | Reduced |
| Sequoia Financial Advisors, LLC | 49,364 | $3.32M | 0.02% | −1,947−3.8% | Reduced |
| Shelton Capital Management | 48,763 | $3.28M | 0.06% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 48,524 | $3.26M | 0.04% | +100+0.2% | Added |
| Mariner, LLC | 48,017 | $3.23M | 0.00% | −7,552−13.6% | Reduced |
| S.E.E.D. Planning Group LLC | 46,966 | $3.16M | 0.90% | +2,233+5.0% | Added |
| UniSuper Management Pty Ltd | 46,644 | $3.14M | 0.02% | +2,007+4.5% | Added |
| OP Asset Management Ltd | 46,282 | $3.11M | 0.04% | −2,857−5.8% | Reduced |
| Taikang Asset Management (Hong Kong) Co Ltd | 45,969 | $3.09M | 0.31% | 00.0% | Unchanged |
| New Age Alpha Advisors, LLC | 45,177 | $3.04M | 0.13% | +7,943+21.3% | Added |
| Nordea Investment Management AB | 44,575 | $2.99M | 0.00% | +3,829+9.4% | Added |
| CWM Advisors, LLC | 43,472 | $2.92M | 0.26% | −1,438−3.2% | Reduced |
| Davidson Kahn Capital Management, LLC | 42,831 | $2.88M | 1.50% | +3,475+8.8% | Added |
| NFJ Investment Group, LLC | 42,415 | $2.85M | 0.10% | −58,810−58.1% | Reduced |
| State of Alaska, Department of Revenue | 41,886 | $2.82M | 0.03% | −3,795−8.3% | Reduced |