Day One Biopharmaceuticals, Inc.
DAWNDelisted Apr 23, 2026- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001845337
Day One Biopharmaceuticals, Inc. was delisted on Apr 23, 2026; its insiders filed their last Form 4 on Apr 27, 2026; 208 institutions reported holding it in 13F filings for Q1 2026, worth $1.85B in total; Soros Fund Management was the only superinvestor holding it.
13F holders, Q4 2023
Institutional positions in Day One Biopharmaceuticals, Inc. as of Dec 31, 2023. 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
- 139
- +9 vs. Q3 2023
- Shares held
- 76.6M
- −977.1K (−1.3%) vs. Q3 2023
- Total value
- $1.12B
- +$166.4M (+17.5%) vs. Q3 2023
- New holders
- 26
- 51 more added
- Sold out
- 17
- 35 more reduced
Compare with Q3 2023: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting DAWN 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 | 1 | $3.55K |
| Q1 2026 | 208 | $1.85B |
| Q4 2025 | 184 | $758.4M |
| Q3 2025 | 173 | $603.5M |
| Q2 2025 | 174 | $561.1M |
| Q1 2025 | 184 | $747.1M |
| Q4 2024 | 164 | $1.19B |
| Q3 2024 | 166 | $1.28B |
| Q2 2024 | 157 | $1.03B |
| Q1 2024 | 148 | $1.20B |
| Q4 2023 | 139 | $1.12B |
| Q3 2023 | 130 | $951.5M |
| Q2 2023 | 140 | $941.0M |
| Q1 2023 | 126 | $818.1M |
| Q4 2022 | 109 | $1.29B |
| Q3 2022 | 93 | $1.21B |
| Q2 2022 | 87 | $1.06B |
| Q1 2022 | 66 | $429.6M |
| Q4 2021 | 58 | $698.3M |
| Q3 2021 | 45 | $452.9M |
| Q2 2021 | 33 | $401.1M |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2023
Shares, value and share of portfolio for each institution holding Day One Biopharmaceuticals, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bank of New York Mellon Corp | 234,198 | $3.42M | 0.00% | +13,902+6.3% | Added |
| Rafferty Asset Management, LLC | 236,347 | $3.45M | 0.01% | −737−0.3% | Reduced |
| Pier Capital, LLC | 258,685 | $3.78M | 0.54% | +258,685 | New |
| Propel Bio Management, LLC | 270,664 | $3.95M | 3.28% | +270,664 | New |
| Woodline Partners LP | 272,538 | $3.98M | 0.04% | 00.0% | Unchanged |
| Candriam Luxembourg S.C.A. | 290,014 | $4.23M | 0.03% | 00.0% | Unchanged |
| Nicholas Investment Partners, LP | 303,318 | $4.43M | 0.52% | −1,885,336−86.1% | Reduced |
| Morgan Stanley | 334,439 | $4.88M | 0.00% | +175,993+111.1% | Added |
| Superstring Capital Management LP | 379,626 | $5.54M | 3.96% | +379,626 | New |
| Alyeska Investment Group, L.P. | 390,167 | $5.70M | 0.04% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 452,934 | $6.61M | 0.00% | +5,796+1.3% | Added |
| Driehaus Capital Management LLC | 483,239 | $7.06M | 0.09% | −5,079−1.0% | Reduced |
| Sphera Funds Management Ltd. | 513,000 | $7.49M | 1.39% | −17,000−3.2% | Reduced |
| Northern Trust Corp | 576,752 | $8.42M | 0.00% | +24,898+4.5% | Added |
| Parkman Healthcare Partners LLC | 625,749 | $9.14M | 1.29% | +159,341+34.2% | Added |
| DAFNA Capital Management LLC | 686,463 | $10.0M | 2.40% | +100,000+17.1% | Added |
| Dimensional Fund Advisors LP | 777,917 | $11.4M | 0.00% | +471,732+154.1% | Added |
| Estuary Capital Management LP | 882,897 | $12.9M | 7.80% | +882,897 | New |
| Baker Bros. Advisors LP | 1,000,000 | $14.6M | 0.17% | 00.0% | Unchanged |
| Boxer Capital, LLC | 1,189,943 | $17.4M | 0.87% | 00.0% | Unchanged |
| PFM Health Sciences, LP | 1,303,575 | $19.0M | 1.14% | −921,023−41.4% | Reduced |
| Geode Capital Management, LLC | 1,348,819 | $19.7M | 0.00% | +55,705+4.3% | Added |
| Polar Capital Holdings Plc | 1,385,000 | $20.2M | 0.14% | −550,000−28.4% | Reduced |
| TimesSquare Capital Management, LLC | 1,666,065 | $24.3M | 0.36% | +523,455+45.8% | Added |
| Janus Henderson Group PLC | 1,696,103 | $24.8M | 0.01% | +874,650+106.5% | Added |
| First Turn Management, LLC | 1,700,949 | $24.8M | 3.57% | +1,700,949 | New |
| Deerfield Management Company, L.P. (Series C) | 1,761,178 | $25.7M | 0.47% | +491,186+38.7% | Added |
| Goldman Sachs Group Inc | 2,118,849 | $30.9M | 0.01% | +472,654+28.7% | Added |
| Price T Rowe Associates Inc | 2,316,764 | $33.8M | 0.00% | +8,736+0.4% | Added |
| Viking Global Investors LPSuperinvestorViking Global Investors | 2,558,563 | $37.4M | 0.14% | 00.0% | Unchanged |
| Pictet Asset Management Holding SA | 2,571,568 | $37.5M | 0.04% | +1,971,529+328.6% | Added |
| State Street Corp | 3,380,098 | $49.3M | 0.00% | +444,179+15.1% | Added |
| FMR LLC | 3,968,166 | $57.9M | 0.00% | −2,057,962−34.2% | Reduced |
| Braidwell LP | 4,215,573 | $61.5M | 2.26% | +500,000+13.5% | Added |
| Franklin Resources Inc | 4,236,795 | $61.9M | 0.03% | +169,463+4.2% | Added |
| Vanguard Group Inc | 4,769,746 | $69.6M | 0.00% | +139,992+3.0% | Added |
| BlackRock Inc. | 5,126,071 | $74.8M | 0.00% | +437,637+9.3% | Added |
| Atlas Venture Life Science Advisors, LLC | 7,608,394 | $111.1M | 13.23% | 00.0% | Unchanged |
| Ra Capital Management, L.P. | 7,809,852 | $114.0M | 1.78% | 00.0% | Unchanged |
| Canaan Partners XI LLC | 0 | $0 | 0.00% | −2,491,561−100.0% | Sold out |
| Commodore Capital LP | 0 | $0 | 0.00% | −739,661−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −548,757−100.0% | Sold out |
| Artal Group S.A. | 0 | $0 | 0.00% | −500,000−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −277,206−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −97,868−100.0% | Sold out |
| AlphaCentric Advisors LLC | 0 | $0 | 0.00% | −95,000−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −35,786−100.0% | Sold out |
| Apis Capital Advisors, LLC | 0 | $0 | 0.00% | −29,000−100.0% | Sold out |
| Walleye Trading LLC | 0 | $0 | 0.00% | −14,966−100.0% | Sold out |
| Capstone Investment Advisors, LLC | 0 | $0 | 0.00% | −11,088−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −2,958−100.0% | Sold out |
| Crewe Advisors LLC | 0 | $0 | 0.00% | −30−100.0% | Sold out |
| Advisor Group Holdings, Inc. | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| CWM, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Avion Wealth | 0 | $0 | 0.00% | −37−100.0% | Sold out |