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 |
|---|---|---|---|---|---|
| Bessemer Group Inc | 17,675 | $712.0K | 0.00% | −1,569−8.2% | Reduced |
| MUFG Securities EMEA plc | 17,388 | $701.4K | 0.01% | 00.0% | Unchanged |
| Pacific Capital Partners Ltd | 17,300 | $697.9K | 0.69% | +17,300 | New |
| Chicago Partners Investment Group LLC | 17,954 | $696.1K | 0.02% | +1,113+6.6% | Added |
| Prelude Capital Management, LLC | 17,215 | $694.5K | 0.05% | +17,215 | New |
| Quadrant Capital Group LLC | 16,861 | $680.2K | 0.02% | +14,215+537.2% | Added |
| Unique Wealth Strategies, LLC | 16,770 | $676.5K | 0.28% | +16,770 | New |
| RMR Wealth Builders | 16,576 | $668.7K | 0.05% | +540+3.4% | Added |
| Diversify Wealth Management, LLC | 19,576 | $668.3K | 0.01% | +14,789+308.9% | Added |
| Dynamic Technology Lab Private Ltd | 16,553 | $667.7K | 0.11% | +16,553 | New |
| Osmosis Investment Management UK Ltd | 16,392 | $661.3K | 0.02% | +16,392 | New |
| Callan Family Office, LLC | 16,337 | $659.0K | 0.01% | −769−4.5% | Reduced |
| Northwestern Mutual Wealth Management Co | 16,221 | $654.4K | 0.00% | −23,646−59.3% | Reduced |
| Sterling Capital Management LLC | 16,008 | $645.8K | 0.01% | −16,298−50.4% | Reduced |
| Redmond Asset Management, LLC | 15,915 | $642.0K | 0.18% | +606+4.0% | Added |
| Benjamin Edwards Inc | 15,895 | $641.1K | 0.01% | −108−0.7% | Reduced |
| NewEdge Wealth, LLC | 15,801 | $637.4K | 0.01% | +2,792+21.5% | Added |
| Farringdon Capital, Ltd. | 15,697 | $633.2K | 0.14% | +15,697 | New |
| Lincoln Capital LLC | 15,693 | $633.1K | 0.12% | −654−4.0% | Reduced |
| Saudi Central Bank | 15,644 | $631.1K | 0.01% | +15,644 | New |
| Vident Advisory, LLC | 15,028 | $606.2K | 0.01% | +924+6.6% | Added |
| PKO Investment Management Joint-Stock Co | 15,000 | $605.1K | 0.05% | +15,000 | New |
| E Fund Management Co., Ltd. | 14,915 | $601.7K | 0.02% | +14,915 | New |
| 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 |
| Horizon Investments, LLC | 14,374 | $579.8K | 0.01% | +295+2.1% | Added |
| Lido Advisors, LLC | 14,301 | $576.9K | 0.00% | −11,628−44.8% | Reduced |
| Moody National Bank Trust Division | 14,286 | $576.3K | 0.05% | +5,952+71.4% | Added |
| Banque Cantonale Vaudoise | 14,027 | $566.0K | 0.02% | +7,060+101.3% | Added |
| Vestmark Advisory Solutions, Inc. | 13,940 | $562.3K | 0.01% | +4,351+45.4% | Added |
| AXA S.A. | 13,908 | $561.0K | 0.22% | +3,096+28.6% | Added |
| Commonwealth Equity Services, LLC | 13,874 | $559.7K | 0.00% | +151+1.1% | Added |
| Salvus Wealth Management, LLC | 13,857 | $559.0K | 0.33% | +10,390+299.7% | Added |
| E. Ohman J:or Asset Management AB | 13,820 | $557.5K | 0.01% | −2,800−16.8% | Reduced |
| Meiji Yasuda Life Insurance Co | 13,720 | $553.5K | 0.02% | +13,720 | New |
| Premier Path Wealth Partners, LLC | 13,628 | $549.8K | 0.07% | +13,628 | New |
| Banco Bilbao Vizcaya Argentaria, S.A. | 13,617 | $548.9K | 0.00% | −388−2.8% | Reduced |
| Larson Financial Group LLC | 13,585 | $548.0K | 0.02% | +12,894+1,866.0% | Added |
| Northwestern Mutual Investment Management Company, LLC | 13,561 | $547.1K | 0.01% | +19+0.1% | Added |
| Banque Pictet & Cie SA | 13,550 | $546.6K | 0.01% | 00.0% | Unchanged |
| Assetmark, Inc | 13,360 | $538.9K | 0.00% | +11,207+520.5% | Added |
| Davis Capital Management | 13,335 | $537.9K | 0.36% | −359−2.6% | Reduced |
| Caitong International Asset Management Co., Ltd | 13,299 | $536.5K | 0.10% | +13,298+1,329,800.0% | Added |
| Merit Financial Group, LLC | 12,901 | $520.4K | 0.00% | +5,900+84.3% | Added |
| Regatta Capital Group, LLC | 12,823 | $517.3K | 0.08% | −558−4.2% | Reduced |
| Westerkirk Capital Inc. | 12,600 | $508.3K | 0.05% | 00.0% | Unchanged |
| Aigen Investment Management, LP | 12,449 | $502.2K | 0.13% | +7,371+145.2% | Added |
| North Dakota State Investment Board | 12,070 | $486.9K | 0.02% | −2,246−15.7% | 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 |
| China Universal Asset Management Co., Ltd. | 11,809 | $476.4K | 0.04% | −185−1.5% | Reduced |
| Avanza Fonder AB | 11,766 | $474.6K | 0.01% | +183+1.6% | Added |
| MUFG Securities Americas Inc. | 11,727 | $473.1K | 0.03% | +310+2.7% | Added |
| Azzad Asset Management Inc | 11,513 | $464.4K | 0.05% | −607−5.0% | Reduced |
| Brighton Jones LLC | 11,495 | $463.7K | 0.01% | +11,495 | New |
| Miracle Mile Advisors, LLC | 11,483 | $463.2K | 0.01% | −627−5.2% | Reduced |
| Postrock Partners LLC | 11,440 | $461.5K | 0.21% | 00.0% | Unchanged |
| Securian Asset Management, Inc | 11,424 | $460.8K | 0.02% | −100−0.9% | Reduced |
| Venturi Wealth Management, LLC | 11,337 | $457.3K | 0.02% | −353−3.0% | Reduced |
| Quantbot Technologies LP | 11,055 | $446.0K | 0.02% | +11,055 | New |
| Kentucky Retirement Systems Insurance Trust Fund | 10,989 | $443.3K | 0.03% | 00.0% | Unchanged |
| Bridgefront Capital, LLC | 10,805 | $435.9K | 0.11% | +4,484+70.9% | Added |
| Intech Investment Management LLC | 10,797 | $435.6K | 0.00% | −17,332−61.6% | Reduced |
| Baird Financial Group, Inc. | 10,736 | $433.1K | 0.00% | −7,816−42.1% | Reduced |
| Gilbert & Cook, Inc. | 10,678 | $430.8K | 0.06% | +255+2.4% | Added |
| Atomi Financial Group, Inc. | 10,674 | $430.6K | 0.01% | +2,360+28.4% | Added |
| Wahed Invest LLC | 10,646 | $429.5K | 0.06% | −329−3.0% | Reduced |
| United Capital Financial Advisers, LLC | 10,563 | $426.1K | 0.00% | +4,530+75.1% | Added |
| Capula Management Ltd | 10,430 | $420.7K | 0.00% | +10,430 | New |
| SRS Capital Advisors, Inc. | 10,430 | $420.4K | 0.01% | +1,231+13.4% | Added |
| Jefferies Financial Group Inc. | 10,276 | $414.5K | 0.01% | −1,950−15.9% | Reduced |
| Accretive Wealth Partners, LLC | 10,249 | $413.4K | 0.12% | +291+2.9% | Added |
| Perennial Investment Advisors, LLC | 10,156 | $409.7K | 0.03% | +10,156 | New |
| Peapack Gladstone Financial Corp | 10,067 | $406.0K | 0.01% | +2,827+39.0% | Added |
| 111 Capital | 10,003 | $403.5K | 0.10% | +10,003 | New |
| Grove Bank & Trust | 9,994 | $403.2K | 0.05% | +4,112+69.9% | Added |
| Cresset Asset Management, LLC | 9,971 | $402.2K | 0.00% | +684+7.4% | Added |
| Magnetar Financial LLC | 9,789 | $400.2K | 0.00% | +9,789 | New |
| Perbak Capital Partners LLP | 9,909 | $399.7K | 0.10% | +9,909 | New |
| Neo Ivy Capital Management | 9,884 | $398.7K | 0.11% | +1,727+21.2% | Added |
| Capstone Investment Advisors, LLC | 9,628 | $388.4K | 0.00% | +2,261+30.7% | Added |
| Two Sigma Securities, LLC | 9,624 | $388.2K | 0.05% | +9,624 | New |
| Nicolet Bankshares Inc | 9,795 | $388.2K | 0.01% | +9,795 | New |
| Brevan Howard Capital Management LP | 9,486 | $382.7K | 0.00% | +9,486 | New |
| Hills Bank & Trust Co | 9,434 | $380.6K | 0.02% | −70−0.7% | Reduced |
| Alliance Wealth Advisors, LLC | 9,394 | $379.0K | 0.08% | +3,045+48.0% | Added |
| Potomac Fund Management Inc | 9,387 | $378.7K | 0.01% | +9,387 | New |
| Davenport & Co LLC | 9,305 | $375.3K | 0.00% | −2,396−20.5% | Reduced |
| Laird Norton Trust Company, LLC | 9,193 | $370.8K | 0.01% | +84+0.9% | Added |
| Beacon Pointe Advisors, LLC | 9,073 | $366.0K | 0.00% | +3,552+64.3% | Added |
| Wealth Alliance | 9,048 | $365.0K | 0.04% | +5,235+137.3% | Added |
| Connable Office Inc | 9,000 | $363.1K | 0.04% | 00.0% | Unchanged |
| CAPROCK Group, Inc. | 8,981 | $362.3K | 0.01% | +8,981 | New |
| GAMMA Investing LLC | 8,967 | $361.7K | 0.02% | −1,351−13.1% | Reduced |
| Vestcor Inc | 8,956 | $361.0K | 0.01% | −3,824−29.9% | Reduced |
| Patten & Patten Inc | 8,747 | $352.9K | 0.02% | +2,444+38.8% | Added |
| Voya Financial Advisors, Inc. | 8,773 | $348.9K | 0.03% | −4,700−34.9% | Reduced |
| Assenagon Asset Management S.A. | 8,599 | $346.9K | 0.00% | −2,862−25.0% | Reduced |
| Plato Investment Management Ltd | 8,565 | $345.7K | 0.02% | 00.0% | Unchanged |
| Hillman Capital Management, Inc. | 8,557 | $345.2K | 0.24% | +8,557 | New |