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, Q2 2026
Institutional positions in Costar Group, Inc. as of Jun 30, 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
- 760
- −28 vs. Q1 2026
- Shares held
- 414.0M
- +5.90M (+1.4%) vs. Q1 2026
- Total value
- $11.7B
- −$4.74B (−28.8%) vs. Q1 2026
- New holders
- 115
- 303 more added
- Sold out
- 143
- 266 more reduced
9 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Costar Group, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Moody National Bank Trust Division | 0 | $0 | 0.00% | −14,286−100.0% | Sold out |
| AXA S.A. | 0 | $0 | 0.00% | −13,908−100.0% | Sold out |
| Meiji Yasuda Life Insurance Co | 0 | $0 | 0.00% | −13,720−100.0% | Sold out |
| China Universal Asset Management Co., Ltd. | 0 | $0 | 0.00% | −11,809−100.0% | Sold out |
| Avanza Fonder AB | 0 | $0 | 0.00% | −11,766−100.0% | Sold out |
| Venturi Wealth Management, LLC | 0 | $0 | 0.00% | −11,337−100.0% | Sold out |
| Capula Management Ltd | 0 | $0 | 0.00% | −10,430−100.0% | Sold out |
| Accretive Wealth Partners, LLC | 0 | $0 | 0.00% | −10,249−100.0% | Sold out |
| Perbak Capital Partners LLP | 0 | $0 | 0.00% | −9,909−100.0% | Sold out |
| Neo Ivy Capital Management | 0 | $0 | 0.00% | −9,884−100.0% | Sold out |
| Alliance Wealth Advisors, LLC | 0 | $0 | 0.00% | −9,394−100.0% | Sold out |
| Davenport & Co LLC | 0 | $0 | 0.00% | −9,305−100.0% | Sold out |
| Beacon Pointe Advisors, LLC | 0 | $0 | 0.00% | −9,073−100.0% | Sold out |
| Wealth Alliance | 0 | $0 | 0.00% | −9,048−100.0% | Sold out |
| CAPROCK Group, Inc. | 0 | $0 | 0.00% | −8,981−100.0% | Sold out |
| Voya Financial Advisors, Inc. | 0 | $0 | 0.00% | −8,773−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −8,599−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −8,100−100.0% | Sold out |
| Pitcairn Wealth Advisors LLC | 0 | $0 | 0.00% | −4,853−100.0% | Sold out |
| Conestoga Capital Advisors, LLC | 0 | $0 | 0.00% | −7,859−100.0% | Sold out |
| Trust Point Inc. | 0 | $0 | 0.00% | −7,810−100.0% | Sold out |
| Commerzbank Aktiengesellschaft | 0 | $0 | 0.00% | −7,761−100.0% | Sold out |
| Sowell Financial Services LLC | 0 | $0 | 0.00% | −7,497−100.0% | Sold out |
| Stansberry Asset Management, LLC | 0 | $0 | 0.00% | −7,463−100.0% | Sold out |
| RSM US Wealth Management LLC | 0 | $0 | 0.00% | −7,279−100.0% | Sold out |
| Ramiah Investment Group | 0 | $0 | 0.00% | −7,217−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −7,141−100.0% | Sold out |
| Wheels Up Wealth, Inc. | 0 | $0 | 0.00% | −6,940−100.0% | Sold out |
| IMC-Chicago, LLC | 0 | $0 | 0.00% | −6,637−100.0% | Sold out |
| TCW Group Inc | 0 | $0 | 0.00% | −6,583−100.0% | Sold out |
| Sig Brokerage, LP | 0 | $0 | 0.00% | −6,424−100.0% | Sold out |
| B.O.S.S. Retirement Advisors, LLC | 0 | $0 | 0.00% | −6,360−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −6,304−100.0% | Sold out |
| CIBC World Markets Inc. | 0 | $0 | 0.00% | −6,299−100.0% | Sold out |
| Baron Wealth Management LLC | 0 | $0 | 0.00% | −6,277−100.0% | Sold out |
| Integrated Advisors Network LLC | 0 | $0 | 0.00% | −6,140−100.0% | Sold out |
| Davidson Kahn Capital Management, LLC | 0 | $0 | 0.00% | −6,156−100.0% | Sold out |
| Bridges Investment Management Inc | 0 | $0 | 0.00% | −6,000−100.0% | Sold out |
| Riverview Capital Advisers, LLC | 0 | $0 | 0.00% | −5,972−100.0% | Sold out |
| Hengehold Capital Management LLC | 0 | $0 | 0.00% | −5,932−100.0% | Sold out |
| Fidelis Capital Partners, LLC | 0 | $0 | 0.00% | −5,770−100.0% | Sold out |
| Groupama Asset Managment | 0 | $0 | 0.00% | −5,705−100.0% | Sold out |
| Fifth Third Wealth Advisors LLC | 0 | $0 | 0.00% | −5,638−100.0% | Sold out |
| Sapient Capital LLC | 0 | $0 | 0.00% | −5,531−100.0% | Sold out |
| Marks Group Wealth Management, Inc | 0 | $0 | 0.00% | −5,465−100.0% | Sold out |
| Alpha Family Trust | 0 | $0 | 0.00% | −5,410−100.0% | Sold out |
| Integrated Investment Consultants, LLC | 0 | $0 | 0.00% | −5,245−100.0% | Sold out |
| Pembroke Management, LTD | 0 | $0 | 0.00% | −5,241−100.0% | Sold out |
| Wallace Advisory Group, LLC | 0 | $0 | 0.00% | −5,191−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −5,077−100.0% | Sold out |
| Checchi Capital Advisers, LLC | 0 | $0 | 0.00% | −5,061−100.0% | Sold out |
| Emerald Advisers, LLC | 0 | $0 | 0.00% | −4,808−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −4,202−100.0% | Sold out |
| Archetype Wealth Partners | 0 | $0 | 0.00% | −2,660−100.0% | Sold out |
| Westpac Banking Corp | 0 | $0 | 0.00% | −2,306−100.0% | Sold out |
| Dara Capital US, Inc. | 0 | $0 | 0.00% | −1,732−100.0% | Sold out |
| Steward Partners Investment Advisory, LLC | 0 | $0 | 0.00% | −1,621−100.0% | Sold out |
| Select Equity Group, L.P. | 0 | $0 | 0.00% | −767−100.0% | Sold out |
| Bank of Jackson Hole Trust | 0 | $0 | 0.00% | −671−100.0% | Sold out |
| Vega Investment Solutions | 0 | $0 | 0.00% | −629−100.0% | Sold out |
| Timothy G. Youngquist 2020 Irrevocable Trust | 0 | $0 | 0.00% | −625−100.0% | Sold out |
| Annis Gardner Whiting Capital Advisors, LLC | 0 | $0 | 0.00% | −487−100.0% | Sold out |
| Westside Investment Management, Inc. | 0 | $0 | 0.00% | −360−100.0% | Sold out |
| Osterweis Capital Management Inc | 0 | $0 | 0.00% | −326−100.0% | Sold out |
| Montag A & Associates Inc | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Catalyst Capital Advisors LLC | 0 | $0 | 0.00% | −279−100.0% | Sold out |
| Basecamp Wealth Advisors LLC | 0 | $0 | 0.00% | −257−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −231−100.0% | Sold out |
| JNBA Financial Advisors | 0 | $0 | 0.00% | −222−100.0% | Sold out |
| Capital Advisors, Ltd. LLC | 0 | $0 | 0.00% | −209−100.0% | Sold out |
| Golden State Equity Partners | 0 | $0 | 0.00% | −184−100.0% | Sold out |
| Wall Street Financial Group, Inc. | 0 | $0 | 0.00% | −179−100.0% | Sold out |
| Kemnay Advisory Services Inc. | 0 | $0 | 0.00% | −167−100.0% | Sold out |
| Swiss Re Ltd | 0 | $0 | 0.00% | −162−100.0% | Sold out |
| Meramec Financial Planners, LLC | 0 | $0 | 0.00% | −146−100.0% | Sold out |
| Elequin Capital LP | 0 | $0 | 0.00% | −137−100.0% | Sold out |
| Bayban | 0 | $0 | 0.00% | −120−100.0% | Sold out |
| Richardson Capital Management LLC | 0 | $0 | 0.00% | −119−100.0% | Sold out |
| Twin Peaks Wealth Advisors, LLC | 0 | $0 | 0.00% | −94−100.0% | Sold out |
| Clayton Financial Group LLC | 0 | $0 | 0.00% | −77−100.0% | Sold out |
| Intentional Wealth Strategies, LLC | 0 | $0 | 0.00% | −66−100.0% | Sold out |
| Whipplewood Advisors, LLC | 0 | $0 | 0.00% | −65−100.0% | Sold out |
| Sachetta, LLC | 0 | $0 | 0.00% | −52−100.0% | Sold out |
| Signature Equity Partners, LLC | 0 | $0 | 0.00% | −29−100.0% | Sold out |
| Clark Wealth Partners | 0 | $0 | 0.00% | −27−100.0% | Sold out |
| NBT Bank N A | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| Washington Trust Advisors, Inc. | 0 | $0 | 0.00% | −22−100.0% | Sold out |
| Financial Management Professionals, Inc. | 0 | $0 | 0.00% | −21−100.0% | Sold out |
| Salem Investment Counselors Inc | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| RWM Asset Management, LLC | 0 | $0 | 0.00% | −20−100.0% | Sold out |
| 1620 Investment Advisors, Inc. | 0 | $0 | 0.00% | −18−100.0% | Sold out |
| Aspect Partners, LLC | 0 | $0 | 0.00% | −17−100.0% | Sold out |
| Portus Wealth Advisors, LLC | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| Rachor Investment Advisory Services, LLC | 0 | $0 | 0.00% | −12−100.0% | Sold out |
| Vermillion Wealth Management, Inc. | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Brown, Lisle/Cummings, Inc. | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| Trust Co of Toledo NA | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| TopTier Wealth Management, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Sound Income Strategies, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Rialto Wealth Management, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |