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, Q1 2025
Institutional positions in Day One Biopharmaceuticals, Inc. as of Mar 31, 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
- 184
- +21 vs. Q4 2024
- Shares held
- 94.2M
- +610.9K (+0.7%) vs. Q4 2024
- Total value
- $747.1M
- −$438.8M (−37.0%) vs. Q4 2024
- New holders
- 42
- 69 more added
- Sold out
- 21
- 45 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Day One Biopharmaceuticals, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 13,700,448 | $108.6M | 0.01% | +812,981+6.3% | Added |
| BlackRock, Inc. | 6,757,929 | $53.6M | 0.00% | +602,092+9.8% | Added |
| Atlas Venture Life Science Advisors, LLC | 6,430,257 | $51.0M | 9.77% | 00.0% | Unchanged |
| Vanguard Group Inc | 5,943,243 | $47.1M | 0.00% | +94,320+1.6% | Added |
| Ra Capital Management, L.P. | 5,755,577 | $45.6M | 0.76% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 4,059,764 | $32.2M | 0.13% | +1,547,577+61.6% | Added |
| Franklin Resources Inc | 4,018,370 | $31.9M | 0.01% | +135,418+3.5% | Added |
| Pictet Asset Management Holding SA | 3,635,580 | $28.8M | 0.03% | +145,516+4.2% | Added |
| Braidwell LP | 3,536,853 | $28.0M | 0.99% | −1,337,000−27.4% | Reduced |
| Estuary Capital Management LP | 3,326,849 | $26.4M | 6.40% | −389,928−10.5% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 2,960,740 | $23.5M | 0.47% | +364,707+14.0% | Added |
| State Street Corp | 2,706,699 | $21.5M | 0.00% | −394,978−12.7% | Reduced |
| Vestal Point Capital, LP | 2,598,127 | $20.6M | 1.47% | +1,158,127+80.4% | Added |
| Polar Capital Holdings Plc | 2,350,000 | $18.6M | 0.12% | +2,165,000+1,170.3% | Added |
| Goldman Sachs Group Inc | 1,569,918 | $12.4M | 0.00% | +1,097,679+232.4% | Added |
| Geode Capital Management, LLC | 1,540,465 | $12.2M | 0.00% | +77,483+5.3% | Added |
| Citadel Advisors LLC | 1,339,018 | $10.6M | 0.01% | +727,705+119.0% | Added |
| Millennium Management LLC | 1,320,095 | $10.5M | 0.01% | +1,127,995+587.2% | Added |
| Dimensional Fund Advisors LP | 1,302,965 | $10.3M | 0.00% | +375,948+40.6% | Added |
| Boxer Capital Management, LLC | 1,189,943 | $9.44M | 2.84% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 1,173,094 | $9.30M | 0.00% | −533,018−31.2% | Reduced |
| Hudson Bay Capital Management LP | 1,150,400 | $9.12M | 0.06% | +230,292+25.0% | Added |
| Bank of America Corp | 1,046,756 | $8.30M | 0.00% | +1,026,222+4,997.7% | Added |
| Parkman Healthcare Partners LLC | 1,043,162 | $8.27M | 0.98% | +42,688+4.3% | Added |
| Marshall Wace, LLP | 887,177 | $7.04M | 0.01% | −210,585−19.2% | Reduced |
| EcoR1 Capital, LLC | 862,068 | $6.84M | 0.41% | 00.0% | Unchanged |
| DAFNA Capital Management LLC | 731,363 | $5.80M | 1.64% | 00.0% | Unchanged |
| Morgan Stanley | 709,415 | $5.63M | 0.00% | −370,853−34.3% | Reduced |
| AQR Capital Management LLC | 618,627 | $4.91M | 0.01% | +530,429+601.4% | Added |
| Northern Trust Corp | 535,997 | $4.25M | 0.00% | −11,053−2.0% | Reduced |
| Charles Schwab Investment Management Inc | 528,148 | $4.19M | 0.00% | −7,353−1.4% | Reduced |
| Algert Global LLC | 371,380 | $2.95M | 0.07% | +371,380 | New |
| Stonepine Capital Management, LLC | 348,820 | $2.77M | 3.21% | +113,820+48.4% | Added |
| Renaissance Technologies LLC | 348,440 | $2.76M | 0.00% | +104,700+43.0% | Added |
| Sphera Funds Management Ltd. | 334,987 | $2.66M | 0.66% | 00.0% | Unchanged |
| Deutsche Bank AG | 334,522 | $2.65M | 0.00% | −24,398−6.8% | Reduced |
| Kennedy Capital Management, Inc. | 327,691 | $2.60M | 0.06% | +133,779+69.0% | Added |
| Susquehanna Fundamental Investments, LLC | 322,875 | $2.56M | 0.04% | +322,875 | New |
| Qube Research & Technologies Ltd | 280,784 | $2.23M | 0.00% | +96,128+52.1% | Added |
| Fisher Asset Management, LLC | 275,207 | $2.18M | 0.00% | +186,075+208.8% | Added |
| Parkwood LLC | 275,000 | $2.18M | 0.21% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 248,380 | $1.97M | 0.00% | +3,551+1.5% | Added |
| Woodline Partners LP | 213,154 | $1.69M | 0.01% | −585,771−73.3% | Reduced |
| Trexquant Investment LP | 204,782 | $1.62M | 0.02% | +116,810+132.8% | Added |
| Royal Bank of Canada | 185,733 | $1.47M | 0.00% | +53,459+40.4% | Added |
| Norges Bank | 169,000 | $1.34M | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 164,676 | $1.31M | 0.00% | +8,442+5.4% | Added |
| BNP Paribas Arbitrage, SA | 162,004 | $1.28M | 0.00% | +125,319+341.6% | Added |
| Barclays PLC | 155,209 | $1.23M | 0.00% | +13,757+9.7% | Added |
| Nuveen, LLC | 139,658 | $1.11M | 0.00% | +139,658 | New |
| Hennion & Walsh Asset Management, Inc. | 137,968 | $1.09M | 0.05% | +16,801+13.9% | Added |
| Balyasny Asset Management LLC | 133,641 | $1.06M | 0.00% | +104,186+353.7% | Added |
| UBS Group AG | 124,176 | $984.7K | 0.00% | +59,949+93.3% | Added |
| Rafferty Asset Management, LLC | 119,160 | $944.9K | 0.00% | −40,248−25.2% | Reduced |
| BIT Capital GmbH | 116,565 | $924.4K | 0.11% | −55,149−32.1% | Reduced |
| UBS Oconnor LLC | 113,250 | $898.1K | 0.02% | +63,230+126.4% | Added |
| UBS Asset Management Americas Inc | 112,279 | $890.4K | 0.00% | +36,700+48.6% | Added |
| Macquarie Group Ltd | 110,000 | $872.0K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 108,568 | $860.9K | 0.00% | +44,314+69.0% | Added |
| Swiss National Bank | 107,500 | $852.5K | 0.00% | −10,300−8.7% | Reduced |
| NEOS Investment Management LLC | 91,123 | $722.6K | 0.01% | +5,362+6.3% | Added |
| Tema ETFs LLC | 91,123 | $722.6K | 0.22% | +5,362+6.3% | Added |
| State of Wisconsin Investment Board | 83,258 | $660.2K | 0.00% | +24,832+42.5% | Added |
| D. E. Shaw & Co., Inc. | 83,070 | $658.7K | 0.00% | −63,315−43.3% | Reduced |
| Rhumbline Advisers | 81,844 | $649.0K | 0.00% | +6,291+8.3% | Added |
| Alps Advisors Inc | 73,343 | $581.6K | 0.00% | −8,206−10.1% | Reduced |
| Two Sigma Investments, LP | 69,895 | $554.3K | 0.00% | −201,881−74.3% | Reduced |
| Alliancebernstein L.P. | 67,790 | $537.6K | 0.00% | −210−0.3% | Reduced |
| Schonfeld Strategic Advisors LLC | 65,525 | $519.6K | 0.00% | +65,525 | New |
| Advisor Group Holdings, Inc. | 65,311 | $517.9K | 0.00% | +32,459+98.8% | Added |
| Quest Partners LLC | 61,952 | $491.3K | 0.05% | +58,556+1,724.3% | Added |
| Martingale Asset Management L P | 61,597 | $488.5K | 0.01% | −9,800−13.7% | Reduced |
| JPMorgan Chase & Co | 61,536 | $488.0K | 0.00% | +1,109+1.8% | Added |
| Legal & General Group Plc | 60,565 | $480.3K | 0.00% | +2,942+5.1% | Added |
| Nebula Research & Development LLC | 57,132 | $453.1K | 0.04% | +37,328+188.5% | Added |
| California State Teachers Retirement System | 55,470 | $439.9K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 54,922 | $435.5K | 0.00% | +54,922 | New |
| Wells Fargo & Company | 53,696 | $425.8K | 0.00% | +1,961+3.8% | Added |
| Erste Asset Management GmbH | 51,200 | $413.2K | 0.01% | 00.0% | Unchanged |
| Intech Investment Management LLC | 51,164 | $405.7K | 0.00% | +16,276+46.7% | Added |
| Tudor Investment Corp Et Al | 50,794 | $402.8K | 0.00% | +50,794 | New |
| Dynamic Technology Lab Private Ltd | 48,457 | $384.0K | 0.06% | +48,457 | New |
| HSBC Holdings PLC | 50,177 | $383.4K | 0.00% | +11,594+30.0% | Added |
| Invesco Ltd. | 46,424 | $368.1K | 0.00% | +13,636+41.6% | Added |
| Gsa Capital Partners LLP | 43,703 | $347.0K | 0.03% | −54,327−55.4% | Reduced |
| Squarepoint Ops LLC | 41,326 | $327.7K | 0.00% | +11,297+37.6% | Added |
| Man Group plc | 38,912 | $308.6K | 0.00% | +26,113+204.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 37,992 | $302.1K | 0.00% | +2,149+6.0% | Added |
| Ieq Capital, LLC | 37,012 | $293.5K | 0.00% | +37,012 | New |
| Kodai Capital Management LP | 34,685 | $275.1K | 0.01% | +34,685 | New |
| SG Americas Securities, LLC | 34,409 | $273.0K | 0.00% | −33,965−49.7% | Reduced |
| MetLife Investment Management | 33,610 | $266.5K | 0.00% | −638−1.9% | Reduced |
| Pale Fire Capital SE | 31,693 | $251.3K | 0.03% | +15,687+98.0% | Added |
| Handelsbanken Fonder AB | 31,500 | $250.0K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 31,487 | $249.0K | 0.00% | +31,487 | New |
| Jane Street Group, LLC | 30,910 | $245.1K | 0.00% | +30,910 | New |
| Manufacturers Life Insurance Company, The | 29,708 | $235.6K | 0.00% | −17,291−36.8% | Reduced |
| Virtus Investment Advisers, Inc. | 28,030 | $222.3K | 0.06% | +28,030 | New |
| ADAR1 Capital Management, LLC | 28,023 | $222.2K | 0.04% | −25,000−47.1% | Reduced |
| Verition Fund Management LLC | 27,546 | $218.4K | 0.00% | −6,600−19.3% | Reduced |