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, Q2 2025
Institutional positions in Day One Biopharmaceuticals, Inc. as of Jun 30, 2025. 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
- 174
- −8 vs. Q1 2025
- Shares held
- 86.3M
- −7.85M (−8.3%) vs. Q1 2025
- Total value
- $561.1M
- −$185.7M (−24.9%) vs. Q1 2025
- New holders
- 26
- 71 more added
- Sold out
- 34
- 55 more reduced
2 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2025: 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, Q2 2025
Shares, value and share of portfolio for each institution holding Day One Biopharmaceuticals, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Dark Forest Capital Management LP | 78,422 | $509.7K | 0.02% | +78,422 | New |
| Catalytic Wealth RIA, LLC | 80,000 | $520.0K | 0.04% | +80,000 | New |
| D. E. Shaw & Co., Inc. | 81,303 | $528.5K | 0.00% | −1,767−2.1% | Reduced |
| Los Angeles Capital Management LLC | 82,257 | $534.7K | 0.00% | +27,335+49.8% | Added |
| Dynamic Technology Lab Private Ltd | 83,223 | $541.0K | 0.07% | +34,766+71.7% | Added |
| JPMorgan Chase & Co | 89,102 | $579.2K | 0.00% | +27,566+44.8% | Added |
| UBS Group AG | 89,475 | $581.6K | 0.00% | −34,701−27.9% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 96,821 | $629.3K | 0.03% | −41,147−29.8% | Reduced |
| Rafferty Asset Management, LLC | 98,691 | $641.5K | 0.00% | −20,469−17.2% | Reduced |
| Schonfeld Strategic Advisors LLC | 99,590 | $647.3K | 0.00% | +34,065+52.0% | Added |
| Susquehanna International Group, LLP | 100,502 | $653.3K | 0.00% | −8,066−7.4% | Reduced |
| Woodline Partners LP | 100,516 | $653.4K | 0.00% | −112,638−52.8% | Reduced |
| UBS Oconnor LLC | 107,249 | $697.1K | 0.02% | −6,001−5.3% | Reduced |
| Citigroup Inc | 108,371 | $704.4K | 0.00% | −56,305−34.2% | Reduced |
| Macquarie Group Ltd | 110,000 | $715.0K | 0.00% | 00.0% | Unchanged |
| Trexquant Investment LP | 115,427 | $750.3K | 0.01% | −89,355−43.6% | Reduced |
| Rhumbline Advisers | 116,060 | $754.4K | 0.00% | +34,216+41.8% | Added |
| NEOS Investment Management LLC | 124,310 | $808.0K | 0.01% | +33,187+36.4% | Added |
| Tema ETFs LLC | 124,310 | $808.0K | 0.21% | +33,187+36.4% | Added |
| BNP Paribas Arbitrage, SA | 125,462 | $815.5K | 0.00% | −36,542−22.6% | Reduced |
| Swiss National Bank | 125,800 | $817.7K | 0.00% | +18,300+17.0% | Added |
| HSBC Holdings PLC | 131,668 | $846.0K | 0.00% | +81,491+162.4% | Added |
| State of Wisconsin Investment Board | 136,276 | $885.8K | 0.00% | +53,018+63.7% | Added |
| Russell Investments Group, Ltd. | 143,453 | $932.4K | 0.00% | +127,113+777.9% | Added |
| National Philanthropic Trust | 150,000 | $975.0K | 0.01% | +150,000 | New |
| Nuveen, LLC | 150,372 | $977.4K | 0.00% | +10,714+7.7% | Added |
| Norges Bank | 169,000 | $1.10M | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 174,974 | $1.14M | 0.00% | −10,759−5.8% | Reduced |
| Sphera Funds Management Ltd. | 175,371 | $1.14M | 0.30% | −159,616−47.6% | Reduced |
| UBS Asset Management Americas Inc | 175,416 | $1.14M | 0.00% | +63,137+56.2% | Added |
| Schroder Investment Management Group | 180,133 | $1.17M | 0.00% | +180,133 | New |
| Cubist Systematic Strategies, LLC | 193,857 | $1.26M | 0.01% | +193,857 | New |
| Fisher Asset Management, LLC | 221,983 | $1.44M | 0.00% | −53,224−19.3% | Reduced |
| Susquehanna Fundamental Investments, LLC | 263,313 | $1.71M | 0.05% | −59,562−18.4% | Reduced |
| Parkwood LLC | 275,000 | $1.79M | 0.16% | 00.0% | Unchanged |
| AQR Capital Management LLC | 279,850 | $1.82M | 0.00% | −338,777−54.8% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 281,528 | $1.83M | 0.04% | +281,528 | New |
| Bank of New York Mellon Corp | 307,853 | $2.00M | 0.00% | +59,473+23.9% | Added |
| ExodusPoint Capital Management, LP | 320,217 | $2.08M | 0.03% | +296,480+1,249.0% | Added |
| Deutsche Bank AG | 325,288 | $2.11M | 0.00% | −9,234−2.8% | Reduced |
| Barclays PLC | 348,109 | $2.26M | 0.00% | +192,900+124.3% | Added |
| Point72 Asset Management, L.P. | 391,280 | $2.54M | 0.01% | +391,280 | New |
| Stonepine Capital Management, LLC | 450,000 | $2.92M | 2.88% | +101,180+29.0% | Added |
| Kennedy Capital Management, Inc. | 453,520 | $2.95M | 0.07% | +125,829+38.4% | Added |
| Parkman Healthcare Partners LLC | 500,000 | $3.25M | 0.38% | −543,162−52.1% | Reduced |
| J. Goldman & Co LP | 557,480 | $3.62M | 0.11% | +557,480 | New |
| Charles Schwab Investment Management Inc | 578,763 | $3.76M | 0.00% | +50,615+9.6% | Added |
| Northern Trust Corp | 611,161 | $3.97M | 0.00% | +75,164+14.0% | Added |
| Citadel Advisors LLC | 703,644 | $4.57M | 0.00% | −635,374−47.5% | Reduced |
| EcoR1 Capital, LLC | 862,068 | $5.60M | 0.33% | 00.0% | Unchanged |
| DAFNA Capital Management LLC | 879,163 | $5.71M | 1.58% | +147,800+20.2% | Added |
| Algert Global LLC | 906,042 | $5.89M | 0.12% | +534,662+144.0% | Added |
| Qube Research & Technologies Ltd | 944,202 | $6.14M | 0.01% | +663,418+236.3% | Added |
| Bank of America Corp | 965,423 | $6.28M | 0.00% | −81,333−7.8% | Reduced |
| Renaissance Technologies LLC | 1,000,540 | $6.50M | 0.01% | +652,100+187.1% | Added |
| Price T Rowe Associates Inc | 1,120,631 | $7.29M | 0.00% | −52,463−4.5% | Reduced |
| Millennium Management LLC | 1,207,802 | $7.85M | 0.01% | −112,293−8.5% | Reduced |
| Hudson Bay Capital Management LP | 1,296,700 | $8.43M | 0.06% | +146,300+12.7% | Added |
| Morgan Stanley | 1,353,148 | $8.80M | 0.00% | +643,733+90.7% | Added |
| Dimensional Fund Advisors LP | 1,416,553 | $9.21M | 0.00% | +113,588+8.7% | Added |
| Goldman Sachs Group Inc | 1,691,286 | $11.0M | 0.00% | +121,368+7.7% | Added |
| Geode Capital Management, LLC | 1,712,429 | $11.1M | 0.00% | +171,964+11.2% | Added |
| Polar Capital Holdings Plc | 2,109,177 | $13.7M | 0.07% | −240,823−10.2% | Reduced |
| Braidwell LP | 2,181,598 | $14.2M | 0.48% | −1,355,255−38.3% | Reduced |
| State Street Corp | 2,689,686 | $17.5M | 0.00% | −17,013−0.6% | Reduced |
| Vestal Point Capital, LP | 3,000,000 | $19.5M | 1.03% | +401,873+15.5% | Added |
| Alyeska Investment Group, L.P. | 3,012,187 | $19.6M | 0.07% | −1,047,577−25.8% | Reduced |
| Pictet Asset Management Holding SA | 3,722,732 | $24.2M | 0.02% | +87,152+2.4% | Added |
| Deerfield Management Company, L.P. (Series C) | 3,723,131 | $24.2M | 0.44% | +762,391+25.8% | Added |
| Franklin Resources Inc | 4,097,625 | $26.6M | 0.01% | +79,255+2.0% | Added |
| Vanguard Group Inc | 6,176,495 | $40.1M | 0.00% | +233,252+3.9% | Added |
| Atlas Venture Life Science Advisors, LLC | 6,430,257 | $41.8M | 6.31% | 00.0% | Unchanged |
| BlackRock, Inc. | 9,830,431 | $63.9M | 0.00% | +3,072,502+45.5% | Added |
| FMR LLC | 11,342,699 | $73.7M | 0.00% | −2,357,749−17.2% | Reduced |
| Ra Capital Management, L.P. | 0 | $0 | 0.00% | −5,755,577−100.0% | Sold out |
| Estuary Capital Management LP | 0 | $0 | 0.00% | −3,326,849−100.0% | Sold out |
| Boxer Capital Management, LLC | 0 | $0 | 0.00% | −1,189,943−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −887,177−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −133,641−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −69,895−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −41,326−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −34,409−100.0% | Sold out |
| Handelsbanken Fonder AB | 0 | $0 | 0.00% | −31,500−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −31,487−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −30,910−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −26,825−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −26,345−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −19,030−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −18,534−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −17,291−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −14,885−100.0% | Sold out |
| Exchange Traded Concepts, LLC | 0 | $0 | 0.00% | −14,693−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −14,255−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −12,998−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −12,800−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −12,150−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −11,836−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −11,303−100.0% | Sold out |
| Pallas Capital Advisors LLC | 0 | $0 | 0.00% | −11,005−100.0% | Sold out |