Day One Biopharmaceuticals IDAWN
13F holders, Q4 2025 (December 31)184holders +12
38new positions
33sold out
8famous investors
$9.32avg. 13F price*
At the end of Q4 2025, 184 institutions reported holding Day One Biopharmaceuticals I (DAWN) in their 13F filings, up 12 from Q3 2025. 38 opened new positions and 33 sold out. The largest holders were BlackRock, Inc. ($82.4M), Atlas Venture Life Science Advisors, LLC ($59.8M) and Vanguard Group Inc. ($58.6M). 8 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Day One Biopharmaceuticals I
- CUSIP
- 23954D109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 38 | $39.1M |
| Exits | 33 | $68.4M |
All 13F filers, Q3 2025 → Q4 2025: 17,099,109 shares bought and 21,638,729 shares sold, net −4,539,620 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 184 holders
| BlackRock, Inc. | 0.00% | Reduce -1.8% | 8,837,574 | $82.4M |
| Atlas Venture Life Science Advisors, LLC | 6.91% | Reduce -0.3% | 6,412,560 | $59.8M |
| Vanguard Group Inc. | 0.00% | Add +1.6% | 6,282,376 | $58.6M |
| FMR LLC | 0.00% | Reduce -43.4% | 5,717,008 | $53.3M |
| Vestal Point Capital, LP | 1.78% | Add +94.4% | 5,200,000 | $48.5M |
| State Street Corp. | 0.00% | Add +32.4% | 4,289,566 | $40.0M |
| Deerfield Management Company, L.P. | 0.51% | Reduce -20.9% | 3,723,131 | $34.7M |
| Pictet Asset Management Holding SA | 0.03% | Add +26.0% | 2,990,801 | $27.9M |
| AIGH Capital Management LLC | 5.49% | Add +31.0% | 1,992,021 | $18.6M |
| Geode Capital Management, LLC | 0.00% | Add +6.6% | 1,877,838 | $17.5M |
| Hudson Bay Capital Management LP | 0.10% | Add +28.8% | 1,700,000 | $15.8M |
| Morgan Stanley | 0.00% | Add +18.9% | 1,550,274 | $14.4M |
| Goldman Sachs Group Inc. | 0.00% | Add +9.8% | 1,506,234 | $14.0M |
| Balyasny Asset Management L.P. | 0.03% | Add +7.7% | 1,489,924 | $13.9M |
| Qube Research & Technologies Ltd | 0.02% | Add +27.3% | 1,486,562 | $13.9M |
| Citadel Advisors | 0.01% | Add +105.0% | 1,359,613 | $12.7M |
| Millennium Management | 0.01% | Add +94.7% | 1,349,919 | $12.6M |
| Renaissance Technologies | 0.02% | Add +44.1% | 1,305,084 | $12.2M |
| Jefferies Financial Group Inc. | 0.09% | New | 1,121,502 | $10.5M |
| Bank of America Corp. | 0.00% | Reduce -9.1% | 1,083,818 | $10.1M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -15.2% | 1,037,312 | $9.7M |
| DAFNA Capital Management LLC | 2.19% | No change | 999,163 | $9.3M |
| Jane Street Group, LLC | 0.01% | Add +202.6% | 845,154 | $7.9M |
| Mak Capital One LLC | 1.04% | Reduce -43.0% | 826,205 | $7.7M |
| Susquehanna International Group, LLP | 0.01% | Add +2456.5% | 737,660 | $6.9M |
| Jacobs Levy Equity Management, Inc. | 0.03% | New | 729,281 | $6.8M |
| Jump Financial, LLC | 0.08% | Add +144.8% | 667,120 | $6.2M |
| Parkman Healthcare Partners LLC | 0.57% | Add +113.9% | 645,544 | $6.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +3.9% | 633,694 | $5.9M |
| Northern Trust Corp. | 0.00% | Reduce -2.0% | 617,035 | $5.8M |
| Schroder Investment Management Group | 0.00% | Add +110.8% | 569,624 | $5.2M |
| Pale Fire Capital SE | 0.65% | Add +79.9% | 544,063 | $5.1M |
| Kennedy Capital Management LLC | 0.11% | Add +0.5% | 542,848 | $5.1M |
| Algert Global LLC | 0.08% | Reduce -59.4% | 535,290 | $5.0M |
| Nuveen, LLC | 0.00% | Add +247.4% | 522,455 | $4.9M |
| BNP Paribas Financial Markets | 0.00% | Add +69.0% | 453,311 | $4.2M |
| HRT Financial LP | 0.01% | Add +40.3% | 450,938 | $4.2M |
| AQR Capital Management | 0.00% | Add +298.0% | 431,758 | $4.0M |
| SG Americas Securities, LLC | 0.00% | Add +1228.9% | 350,092 | $3.3M |
| Hennion & Walsh Asset Management, Inc. | 0.10% | Add +229.7% | 313,455 | $2.9M |
| Schonfeld Strategic Advisors LLC | 0.01% | Add +1186.9% | 300,102 | $2.8M |
| Logos Global Management LP | 0.19% | New | 300,000 | $2.8M |
| Barclays PLC | 0.00% | Reduce -15.8% | 292,325 | $2.7M |
| Y-Intercept (Hong Kong) Ltd | 0.06% | New | 282,025 | $2.6M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 255,022 | $2.4M |
| Group One Trading LLC | 0.07% | New | 253,143 | $2.4M |
| Bank of New York Mellon Corp | 0.00% | Reduce -30.9% | 211,546 | $2.0M |
| Stonepine Capital Management, LLC | 1.47% | Reduce -69.1% | 200,000 | $1.9M |
| Man Group plc | 0.00% | Add +114.7% | 197,096 | $1.8M |
| Fisher Asset Management | 0.00% | Reduce -12.9% | 191,823 | $1.8M |
| UBS Group AG | 0.00% | Reduce -18.6% | 170,728 | $1.6M |
| Norges Bank | 0.00% | — | 169,000 | $1.6M |
| Rafferty Asset Management, LLC | 0.01% | Add +23.1% | 157,010 | $1.5M |
| Point72 Asset Management | 0.00% | New | 156,206 | $1.5M |
| Massachusetts Financial Services Co. | 0.00% | New | 150,925 | $1.4M |
| GC Wealth Management RIA, LLC | 0.05% | Add +200.1% | 150,030 | $1.4M |
| Sphera Funds Management LTD. | 0.28% | Reduce -17.1% | 145,371 | $1.4M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -4.8% | 143,079 | $1.3M |
| Gsa Capital Partners LLP | 0.11% | New | 142,809 | $1.3M |
| Swiss National Bank | 0.00% | Add +12.5% | 141,500 | $1.3M |
| XTX Topco Ltd | 0.03% | Add +62.9% | 128,440 | $1.2M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +7.0% | 124,422 | $1.2M |
| Invesco Ltd. | 0.00% | Add +26.5% | 123,994 | $1.2M |
| Nomura Holdings Inc. | 0.00% | New | 115,000 | $1.1M |
| Wells Fargo & Company | 0.00% | Add +40.8% | 114,716 | $1.1M |
| Rhumbline Advisers | 0.00% | Reduce -8.4% | 111,679 | $1.0M |
| Nomura Asset Management International Inc. | 0.00% | — | 110,000 | $1.0M |
| T. Rowe Price Associates Inc. | 0.00% | Add +28.5% | 102,456 | $955K |
| Squarepoint Ops LLC | 0.00% | New | 100,612 | $938K |
| Oracle Investment Management Inc. | 0.61% | New | 100,000 | $932K |
| Ameriprise Financial Inc. | 0.00% | New | 87,073 | $812K |
| Alps Advisors Inc. | 0.00% | Add +71.9% | 84,304 | $786K |
| Perkins Capital Management Inc. | 0.62% | Add +2.1% | 84,000 | $783K |
| Virtus Investment Advisers, LLC | 0.21% | Add +23.1% | 81,747 | $762K |
| American Century Companies Inc. | 0.00% | Add +133.1% | 78,925 | $736K |
| Los Angeles Capital Management LLC | 0.00% | Add +1.4% | 100,314 | $706K |
| California State Teachers Retirement System | 0.00% | Add +0.5% | 72,219 | $673K |
| Alliancebernstein L.P. | 0.00% | No change | 67,790 | $632K |
| Legal & General Group Plc | 0.00% | Add +12.0% | 63,668 | $593K |
| Tudor Investment Corporation | 0.00% | Add +25.8% | 62,316 | $581K |
| Profund Advisors LLC | 0.02% | Add +110.3% | 58,129 | $542K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Reduce -38.0% | 57,379 | $535K |
| Deutsche Bank AG | 0.00% | Add +37.4% | 57,010 | $531K |
| Franklin Resources Inc. | 0.00% | Reduce -98.5% | 52,726 | $491K |
| Erste Asset Management GmbH | 0.00% | No change | 51,200 | $480K |
| Graham Capital Management, L.P. | 0.02% | New | 50,355 | $469K |
| HSBC Holdings PLC | 0.00% | Reduce -55.1% | 49,333 | $455K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +13.3% | 45,613 | $424K |
| MetLife Investment Management, LLC | 0.00% | Add +16.5% | 43,664 | $407K |
| JPMorgan Chase & Co. | 0.00% | Reduce -33.7% | 43,530 | $406K |
| Brevan Howard Capital Management LP | 0.01% | Add +78.8% | 43,284 | $403K |
| Lion Point Capital, LP | 2.03% | No change | 42,000 | $391K |
| Osaic Holdings, Inc. | 0.00% | Add +5.9% | 39,490 | $368K |
| ExodusPoint Capital Management, LP | 0.00% | Reduce -35.5% | 39,321 | $366K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +59.9% | 38,520 | $359K |
| Canada Pension Plan Investment Board | 0.00% | New | 38,500 | $359K |
| Sei Investments Co. | 0.00% | New | 37,514 | $350K |
| Intech Investment Management LLC | 0.00% | Add +15.3% | 36,058 | $336K |
| Dark Forest Capital Management LP | 0.02% | New | 35,562 | $331K |
| AlphaQuest LLC | 0.02% | Reduce -80.9% | 35,326 | $329K |
"% of holder's portfolio" is DAWN's weight in each manager's 13F, not the share of Day One Biopharmaceuticals I the manager owns.