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, Q1 2026
Institutional positions in Costar Group, Inc. as of Mar 31, 2026. 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
- 797
- −34 vs. Q4 2025
- Shares held
- 415.9M
- +73.3M (+21.4%) vs. Q4 2025
- Total value
- $16.8B
- −$6.24B (−27.1%) vs. Q4 2025
- New holders
- 130
- 308 more added
- Sold out
- 164
- 276 more reduced
16 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Voya Financial Advisors, Inc. | 8,773 | $348.9K | 0.03% | −4,700−34.9% | Reduced |
| Patten & Patten Inc | 8,747 | $352.9K | 0.02% | +2,444+38.8% | Added |
| Vestcor Inc | 8,956 | $361.0K | 0.01% | −3,824−29.9% | Reduced |
| GAMMA Investing LLC | 8,967 | $361.7K | 0.02% | −1,351−13.1% | Reduced |
| CAPROCK Group, Inc. | 8,981 | $362.3K | 0.01% | +8,981 | New |
| Connable Office Inc | 9,000 | $363.1K | 0.04% | 00.0% | Unchanged |
| Wealth Alliance | 9,048 | $365.0K | 0.04% | +5,235+137.3% | Added |
| Beacon Pointe Advisors, LLC | 9,073 | $366.0K | 0.00% | +3,552+64.3% | Added |
| Laird Norton Trust Company, LLC | 9,193 | $370.8K | 0.01% | +84+0.9% | Added |
| Davenport & Co LLC | 9,305 | $375.3K | 0.00% | −2,396−20.5% | Reduced |
| Potomac Fund Management Inc | 9,387 | $378.7K | 0.01% | +9,387 | New |
| Alliance Wealth Advisors, LLC | 9,394 | $379.0K | 0.08% | +3,045+48.0% | Added |
| Hills Bank & Trust Co | 9,434 | $380.6K | 0.02% | −70−0.7% | Reduced |
| Brevan Howard Capital Management LP | 9,486 | $382.7K | 0.00% | +9,486 | New |
| Nicolet Bankshares Inc | 9,795 | $388.2K | 0.01% | +9,795 | New |
| Two Sigma Securities, LLC | 9,624 | $388.2K | 0.05% | +9,624 | New |
| Capstone Investment Advisors, LLC | 9,628 | $388.4K | 0.00% | +2,261+30.7% | Added |
| Neo Ivy Capital Management | 9,884 | $398.7K | 0.11% | +1,727+21.2% | Added |
| Perbak Capital Partners LLP | 9,909 | $399.7K | 0.10% | +9,909 | New |
| Magnetar Financial LLC | 9,789 | $400.2K | 0.00% | +9,789 | New |
| Cresset Asset Management, LLC | 9,971 | $402.2K | 0.00% | +684+7.4% | Added |
| Grove Bank & Trust | 9,994 | $403.2K | 0.05% | +4,112+69.9% | Added |
| 111 Capital | 10,003 | $403.5K | 0.10% | +10,003 | New |
| Peapack Gladstone Financial Corp | 10,067 | $406.0K | 0.01% | +2,827+39.0% | Added |
| Perennial Investment Advisors, LLC | 10,156 | $409.7K | 0.03% | +10,156 | New |
| Accretive Wealth Partners, LLC | 10,249 | $413.4K | 0.12% | +291+2.9% | Added |
| Jefferies Financial Group Inc. | 10,276 | $414.5K | 0.01% | −1,950−15.9% | Reduced |
| SRS Capital Advisors, Inc. | 10,430 | $420.4K | 0.01% | +1,231+13.4% | Added |
| Capula Management Ltd | 10,430 | $420.7K | 0.00% | +10,430 | New |
| United Capital Financial Advisers, LLC | 10,563 | $426.1K | 0.00% | +4,530+75.1% | Added |
| Wahed Invest LLC | 10,646 | $429.5K | 0.06% | −329−3.0% | Reduced |
| Atomi Financial Group, Inc. | 10,674 | $430.6K | 0.01% | +2,360+28.4% | Added |
| Gilbert & Cook, Inc. | 10,678 | $430.8K | 0.06% | +255+2.4% | Added |
| Baird Financial Group, Inc. | 10,736 | $433.1K | 0.00% | −7,816−42.1% | Reduced |
| Intech Investment Management LLC | 10,797 | $435.6K | 0.00% | −17,332−61.6% | Reduced |
| Bridgefront Capital, LLC | 10,805 | $435.9K | 0.11% | +4,484+70.9% | Added |
| Kentucky Retirement Systems Insurance Trust Fund | 10,989 | $443.3K | 0.03% | 00.0% | Unchanged |
| Quantbot Technologies LP | 11,055 | $446.0K | 0.02% | +11,055 | New |
| Venturi Wealth Management, LLC | 11,337 | $457.3K | 0.02% | −353−3.0% | Reduced |
| Securian Asset Management, Inc | 11,424 | $460.8K | 0.02% | −100−0.9% | Reduced |
| Postrock Partners LLC | 11,440 | $461.5K | 0.21% | 00.0% | Unchanged |
| Miracle Mile Advisors, LLC | 11,483 | $463.2K | 0.01% | −627−5.2% | Reduced |
| Brighton Jones LLC | 11,495 | $463.7K | 0.01% | +11,495 | New |
| Azzad Asset Management Inc | 11,513 | $464.4K | 0.05% | −607−5.0% | Reduced |
| MUFG Securities Americas Inc. | 11,727 | $473.1K | 0.03% | +310+2.7% | Added |
| Avanza Fonder AB | 11,766 | $474.6K | 0.01% | +183+1.6% | Added |
| China Universal Asset Management Co., Ltd. | 11,809 | $476.4K | 0.04% | −185−1.5% | Reduced |
| Metis Global Partners, LLC | 12,000 | $484.1K | 0.01% | −1,457−10.8% | Reduced |
| Potomac Capital Management, Inc. | 12,000 | $484.1K | 0.42% | +12,000 | New |
| North Dakota State Investment Board | 12,070 | $486.9K | 0.02% | −2,246−15.7% | Reduced |
| Aigen Investment Management, LP | 12,449 | $502.2K | 0.13% | +7,371+145.2% | Added |
| Westerkirk Capital Inc. | 12,600 | $508.3K | 0.05% | 00.0% | Unchanged |
| Regatta Capital Group, LLC | 12,823 | $517.3K | 0.08% | −558−4.2% | Reduced |
| Merit Financial Group, LLC | 12,901 | $520.4K | 0.00% | +5,900+84.3% | Added |
| Caitong International Asset Management Co., Ltd | 13,299 | $536.5K | 0.10% | +13,298+1,329,800.0% | Added |
| Davis Capital Management | 13,335 | $537.9K | 0.36% | −359−2.6% | Reduced |
| Assetmark, Inc | 13,360 | $538.9K | 0.00% | +11,207+520.5% | Added |
| Banque Pictet & Cie SA | 13,550 | $546.6K | 0.01% | 00.0% | Unchanged |
| Northwestern Mutual Investment Management Company, LLC | 13,561 | $547.1K | 0.01% | +19+0.1% | Added |
| Larson Financial Group LLC | 13,585 | $548.0K | 0.02% | +12,894+1,866.0% | Added |
| Banco Bilbao Vizcaya Argentaria, S.A. | 13,617 | $548.9K | 0.00% | −388−2.8% | Reduced |
| Premier Path Wealth Partners, LLC | 13,628 | $549.8K | 0.07% | +13,628 | New |
| Meiji Yasuda Life Insurance Co | 13,720 | $553.5K | 0.02% | +13,720 | New |
| E. Ohman J:or Asset Management AB | 13,820 | $557.5K | 0.01% | −2,800−16.8% | Reduced |
| Salvus Wealth Management, LLC | 13,857 | $559.0K | 0.33% | +10,390+299.7% | Added |
| Commonwealth Equity Services, LLC | 13,874 | $559.7K | 0.00% | +151+1.1% | Added |
| AXA S.A. | 13,908 | $561.0K | 0.22% | +3,096+28.6% | Added |
| Vestmark Advisory Solutions, Inc. | 13,940 | $562.3K | 0.01% | +4,351+45.4% | Added |
| Banque Cantonale Vaudoise | 14,027 | $566.0K | 0.02% | +7,060+101.3% | Added |
| Moody National Bank Trust Division | 14,286 | $576.3K | 0.05% | +5,952+71.4% | Added |
| Lido Advisors, LLC | 14,301 | $576.9K | 0.00% | −11,628−44.8% | Reduced |
| Horizon Investments, LLC | 14,374 | $579.8K | 0.01% | +295+2.1% | Added |
| Umb Bank N A | 14,469 | $583.7K | 0.01% | −210,142−93.6% | Reduced |
| NBC Securities, Inc. | 14,469 | $583.7K | 0.04% | +10,262+243.9% | Added |
| E Fund Management Co., Ltd. | 14,915 | $601.7K | 0.02% | +14,915 | New |
| PKO Investment Management Joint-Stock Co | 15,000 | $605.1K | 0.05% | +15,000 | New |
| Vident Advisory, LLC | 15,028 | $606.2K | 0.01% | +924+6.6% | Added |
| Saudi Central Bank | 15,644 | $631.1K | 0.01% | +15,644 | New |
| Lincoln Capital LLC | 15,693 | $633.1K | 0.12% | −654−4.0% | Reduced |
| Farringdon Capital, Ltd. | 15,697 | $633.2K | 0.14% | +15,697 | New |
| NewEdge Wealth, LLC | 15,801 | $637.4K | 0.01% | +2,792+21.5% | Added |
| Benjamin Edwards Inc | 15,895 | $641.1K | 0.01% | −108−0.7% | Reduced |
| Redmond Asset Management, LLC | 15,915 | $642.0K | 0.18% | +606+4.0% | Added |
| Sterling Capital Management LLC | 16,008 | $645.8K | 0.01% | −16,298−50.4% | Reduced |
| Northwestern Mutual Wealth Management Co | 16,221 | $654.4K | 0.00% | −23,646−59.3% | Reduced |
| Callan Family Office, LLC | 16,337 | $659.0K | 0.01% | −769−4.5% | Reduced |
| Osmosis Investment Management UK Ltd | 16,392 | $661.3K | 0.02% | +16,392 | New |
| Dynamic Technology Lab Private Ltd | 16,553 | $667.7K | 0.11% | +16,553 | New |
| Diversify Wealth Management, LLC | 19,576 | $668.3K | 0.01% | +14,789+308.9% | Added |
| RMR Wealth Builders | 16,576 | $668.7K | 0.05% | +540+3.4% | Added |
| Unique Wealth Strategies, LLC | 16,770 | $676.5K | 0.28% | +16,770 | New |
| Quadrant Capital Group LLC | 16,861 | $680.2K | 0.02% | +14,215+537.2% | Added |
| Prelude Capital Management, LLC | 17,215 | $694.5K | 0.05% | +17,215 | New |
| Chicago Partners Investment Group LLC | 17,954 | $696.1K | 0.02% | +1,113+6.6% | Added |
| Pacific Capital Partners Ltd | 17,300 | $697.9K | 0.69% | +17,300 | New |
| MUFG Securities EMEA plc | 17,388 | $701.4K | 0.01% | 00.0% | Unchanged |
| Bessemer Group Inc | 17,675 | $712.0K | 0.00% | −1,569−8.2% | Reduced |
| Allspring Global Investments Holdings, LLC | 18,300 | $725.2K | 0.00% | −164,579−90.0% | Reduced |
| Quotient Wealth Partners, LLC | 18,124 | $731.1K | 0.02% | −123−0.7% | Reduced |
| Guidance Capital, Inc | 21,014 | $733.4K | 0.16% | +5,987+39.8% | Added |