Who owns COSTAR GROUP, INC.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CSGP from SEC Form 13F filings across 754 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 754 institutions disclosed 413.9M shares of COSTAR GROUP, INC. worth $12.29B — about 102.4% of shares outstanding; the largest disclosed holder is VANGUARD PORTFOLIO MANAGEMENT LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
754
13F holders
$12.29B
value, 2026 filers
102.4%
of shares outstanding (413.9M sh)
126
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of CSGP's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | VANGUARD PORTFOLIO MANAGEMENT LLC | 37.9M | $1.07B | 0.0% | 9.4% | -0.8% |
| 2 | BlackRock, Inc. | 33.8M | $957.6M | 0.0% | 8.4% | 0.0% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 26.7M | $755.7M | 0.0% | 6.6% | -2.7% |
| 4 | BAMCO INC /NY/ | 21.6M | $612.5M | 0.9% | 5.4% | +32.6% |
| 5 | STATE STREET CORP | 18.4M | $521.4M | 0.0% | 4.6% | -1.3% |
| 6 | Capital International Investors | 16.6M | $471.3M | 0.1% | 4.1% | +7.3% |
| 7 | BAILLIE GIFFORD & CO | 13.2M | $372.5M | 0.3% | 3.3% | -3.4% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 12.2M | $343.3M | 0.0% | 3% | -2.3% |
| 9 | AKRE CAPITAL MANAGEMENT LLC | 11.7M | $331.3M | 6.5% | 2.9% | +13.1% |
| 10 | POLEN CAPITAL MANAGEMENT LLC | 8.8M | $248.1M | 2.1% | 2.2% | -30.3% |
| 11 | AQR CAPITAL MANAGEMENT LLC | 8.4M | $239.2M | 0.1% | 2.1% | +568.8% |
| 12 | Jupiter Topco LLCNEW | 7.8M | $221.8M | 0.1% | 1.9% | new |
| 13 | Invesco Ltd. | 6.8M | $192.8M | 0.0% | 1.7% | -4.6% |
| 14 | EdgePoint Investment Group Inc.NEW | 6.0M | $168.5M | 1.3% | 1.5% | new |
| 15 | NORGES BANKNEW | 5.9M | $168.5M | 0.0% | 1.5% | new |
| 16 | MORGAN STANLEY | 5.5M | $155.4M | 0.0% | 1.4% | +1.4% |
| 17 | Meritage Group LP | 5.4M | $152.8M | 5.9% | 1.3% | +62.0% |
| 18 | GOLDMAN SACHS GROUP INC | 5.1M | $145.3M | 0.0% | 1.3% | -44.5% |
| 19 | JPMORGAN CHASE & CO | 4.9M | $145.4M | 0.0% | 1.2% | +167.1% |
| 20 | FEDERATED HERMES, INC. | 4.4M | $125.4M | 0.2% | 1.1% | +241.1% |
| 21 | Capital Research Global Investors | 4.2M | $118.8M | 0.0% | 1% | -4.1% |
| 22 | PRINCIPAL FINANCIAL GROUP INC | 3.8M | $107.4M | 0.1% | 0.9% | -78.6% |
| 23 | NORTHERN TRUST CORP | 3.4M | $97.7M | 0.0% | 0.9% | +0.5% |
| 24 | Qube Research & Technologies LtdNEW | 3.2M | $91.1M | 0.1% | 0.8% | new |
| 25 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 3.1M | $88.9M | 0.1% | 0.8% | +17.2% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.