266 institutions reported holding $1.93B of DAY ONE BIOPHARMACEUTICALS I (DAWN) in SEC 13F filings for 2026-03-31. Largest institutional holders: BlackRock, Inc. ($151.0M), GLAZER CAPITAL, LLC ($100.4M), FIL Ltd ($88.6M), Kryger Capital LLC ($83.5M), DEERFIELD MANAGEMENT COMPANY, L.P. ($79.8M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $151.0M | 7.0M | Trimmed |
| 2 | GLAZER CAPITAL, LLC | $100.4M | 4.7M | New |
| 3 | FIL Ltd | $88.6M | 4.1M | New |
| 4 | Kryger Capital LLC | $83.5M | 3.9M | New |
| 5 | DEERFIELD MANAGEMENT COMPANY, L.P. | $79.8M | 3.7M | Hold |
| 6 | JPMORGAN CHASE & CO | $75.3M | 3.5M | Added |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $72.0M | 3.4M | New |
| 8 | STATE STREET CORP | $61.5M | 2.9M | Trimmed |
| 9 | Balyasny Asset Management L.P. | $56.3M | 2.6M | Added |
| 10 | AQR Arbitrage LLC | $52.8M | 2.5M | New |
| 11 | UBS Group AG | $49.4M | 2.3M | Added |
| 12 | VANGUARD PORTFOLIO MANAGEMENT LLC | $44.9M | 2.1M | New |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | $41.9M | 2.0M | Added |
| 14 | Qube Research & Technologies Ltd | $41.9M | 2.0M | Added |
| 15 | MILLENNIUM MANAGEMENT LLC | $41.3M | 1.9M | Added |
| 16 | BANK OF AMERICA CORP /DE/ | $40.8M | 1.9M | Added |
| 17 | O'Connor Alternative Investments LLC | $40.0M | 1.9M | New |
| 18 | Nuveen, LLC | $39.1M | 1.8M | Added |
| 19 | WATER ISLAND CAPITAL LLC | $38.2M | 1.8M | New |
| 20 | PERCEPTIVE ADVISORS LLC | $37.6M | 1.8M | New |
| 21 | ODDO BHF ASSET MANAGEMENT SAS | $33.2M | 1.6M | New |
| 22 | SOROS FUND MANAGEMENT LLC | $33.0M | 1.5M | New |
| 23 | First Trust Capital Management L.P. | $32.1M | 1.5M | New |
| 24 | RENAISSANCE TECHNOLOGIES LLC | $27.8M | 1.3M | Trimmed |
| 25 | GOLDMAN SACHS GROUP INC | $21.0M | 979,238 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31