COSTAR GROUP, INC. - CSGP
Ownership (Schedule 13D / 13G) · latest 50 filings
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| Filed | Form | Reporting person | Percent | Shares | SEC |
|---|---|---|---|---|---|
| Aug 14, 2026 | SCHEDULE 13G | BAMCO INC /NY/ | 4.58% | 18,720,188 | View |
| Aug 14, 2026 | SCHEDULE 13G | Baron Capital Group, Inc. | 5.3% | 21,626,763 | View |
| Aug 14, 2026 | SCHEDULE 13G | Baron Capital Management, Inc. | 0.71% | 2,906,575 | View |
| Aug 14, 2026 | SCHEDULE 13G | Ronald Baron | 5.3% | 21,626,763 | View |
| Apr 29, 2026 | SCHEDULE 13G | Vanguard Capital Management | 7.53% | 31,613,997 | View |
| Apr 29, 2026 | SCHEDULE 13G | Vanguard Portfolio Management | 9.12% | 38,292,035 | View |
| Mar 26, 2026 | SCHEDULE 13G/A | The Vanguard Group | 0.0% | 0 | View |
Percent = "% of class represented by amount beneficially owned" for this reporting person in the filed 13D/13G.
Shares = reported beneficial ownership amount for the same row (not portfolio shares from 13F).
Amendments (/A) can repeat the same holder over time, so rows should not be summed.
Extraction is best-effort from filing text and can be missing or noisy; verify exact figures via the SEC link in each row.