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, Q3 2025
Institutional positions in Day One Biopharmaceuticals, Inc. as of Sep 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
- 173
- +1 vs. Q2 2025
- Shares held
- 85.6M
- −543.9K (−0.6%) vs. Q2 2025
- Total value
- $603.5M
- +$43.5M (+7.8%) vs. Q2 2025
- New holders
- 33
- 54 more added
- Sold out
- 32
- 61 more reduced
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Day One Biopharmaceuticals, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Virtus Investment Advisers, Inc. | 66,427 | $468.3K | 0.13% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 67,790 | $477.9K | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 71,894 | $506.9K | 0.00% | +15,774+28.1% | Added |
| D. E. Shaw & Co., Inc. | 77,972 | $549.7K | 0.00% | −3,331−4.1% | Reduced |
| XTX Topco Ltd | 78,848 | $555.9K | 0.03% | +54,580+224.9% | Added |
| Price T Rowe Associates Inc | 79,733 | $563.0K | 0.00% | −1,040,898−92.9% | Reduced |
| Wells Fargo & Company | 81,468 | $574.4K | 0.00% | +8,901+12.3% | Added |
| Perkins Capital Management Inc | 82,250 | $579.9K | 0.51% | +82,250 | New |
| Dynamic Technology Lab Private Ltd | 87,541 | $618.0K | 0.10% | +4,318+5.2% | Added |
| Man Group plc | 91,818 | $647.3K | 0.00% | +34,956+61.5% | Added |
| Susquehanna Portfolio Strategies, LLC | 92,555 | $652.5K | 0.01% | +92,555 | New |
| Hennion & Walsh Asset Management, Inc. | 95,072 | $670.3K | 0.02% | −1,749−1.8% | Reduced |
| Invesco Ltd. | 98,042 | $691.2K | 0.00% | +29,535+43.1% | Added |
| Los Angeles Capital Management LLC | 98,889 | $697.2K | 0.00% | +16,632+20.2% | Added |
| AQR Capital Management LLC | 108,477 | $764.8K | 0.00% | −171,373−61.2% | Reduced |
| HSBC Holdings PLC | 109,781 | $771.8K | 0.00% | −21,887−16.6% | Reduced |
| Macquarie Group Ltd | 110,000 | $776.0K | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 116,245 | $819.5K | 0.00% | −59,171−33.7% | Reduced |
| Rhumbline Advisers | 121,945 | $859.7K | 0.00% | +5,885+5.1% | Added |
| Swiss National Bank | 125,800 | $886.9K | 0.00% | 00.0% | Unchanged |
| Rafferty Asset Management, LLC | 127,580 | $899.4K | 0.00% | +28,889+29.3% | Added |
| Knott David M Jr | 130,500 | $920.0K | 0.39% | +96,786+287.1% | Added |
| Susquehanna Fundamental Investments, LLC | 138,420 | $975.9K | 0.04% | −124,893−47.4% | Reduced |
| National Philanthropic Trust | 150,000 | $1.06M | 0.01% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 150,349 | $1.06M | 0.00% | +6,896+4.8% | Added |
| Nuveen, LLC | 150,372 | $1.06M | 0.00% | 00.0% | Unchanged |
| Sphera Funds Management Ltd. | 175,371 | $1.24M | 0.29% | 00.0% | Unchanged |
| Quest Partners LLC | 185,006 | $1.30M | 0.09% | +169,134+1,065.6% | Added |
| UBS Group AG | 209,717 | $1.48M | 0.00% | +120,242+134.4% | Added |
| Fisher Asset Management, LLC | 220,163 | $1.55M | 0.00% | −1,820−0.8% | Reduced |
| Trexquant Investment LP | 266,580 | $1.88M | 0.02% | +151,153+131.0% | Added |
| Schroder Investment Management Group | 270,217 | $1.89M | 0.00% | +90,084+50.0% | Added |
| BNP Paribas Arbitrage, SA | 268,288 | $1.89M | 0.00% | +142,826+113.8% | Added |
| Jump Financial, LLC | 272,547 | $1.92M | 0.02% | +272,547 | New |
| Parkwood LLC | 275,000 | $1.94M | 0.19% | 00.0% | Unchanged |
| Jane Street Group, LLC | 279,344 | $1.97M | 0.00% | +279,344 | New |
| Parkman Healthcare Partners LLC | 301,746 | $2.13M | 0.23% | −198,254−39.7% | Reduced |
| Pale Fire Capital SE | 302,467 | $2.13M | 0.23% | +267,624+768.1% | Added |
| Bank of New York Mellon Corp | 306,180 | $2.16M | 0.00% | −1,673−0.5% | Reduced |
| HRT Financial LP | 321,377 | $2.27M | 0.01% | +321,377 | New |
| Barclays PLC | 347,185 | $2.45M | 0.00% | −924−0.3% | Reduced |
| Kennedy Capital Management, Inc. | 540,384 | $3.81M | 0.08% | +86,864+19.2% | Added |
| J. Goldman & Co LP | 569,619 | $4.02M | 0.15% | +12,139+2.2% | Added |
| Charles Schwab Investment Management Inc | 610,064 | $4.30M | 0.00% | +31,301+5.4% | Added |
| Northern Trust Corp | 629,592 | $4.44M | 0.00% | +18,431+3.0% | Added |
| Stonepine Capital Management, LLC | 647,382 | $4.56M | 3.71% | +197,382+43.9% | Added |
| Citadel Advisors LLC | 663,213 | $4.68M | 0.00% | −40,431−5.7% | Reduced |
| Millennium Management LLC | 693,320 | $4.89M | 0.00% | −514,482−42.6% | Reduced |
| Renaissance Technologies LLC | 905,476 | $6.38M | 0.01% | −95,064−9.5% | Reduced |
| DAFNA Capital Management LLC | 999,163 | $7.04M | 1.74% | +120,000+13.6% | Added |
| Qube Research & Technologies Ltd | 1,167,669 | $8.23M | 0.01% | +223,467+23.7% | Added |
| Bank of America Corp | 1,191,851 | $8.40M | 0.00% | +226,428+23.5% | Added |
| Dimensional Fund Advisors LP | 1,223,284 | $8.62M | 0.00% | −193,269−13.6% | Reduced |
| Morgan Stanley | 1,304,029 | $9.19M | 0.00% | −49,119−3.6% | Reduced |
| Algert Global LLC | 1,317,042 | $9.29M | 0.16% | +411,000+45.4% | Added |
| Hudson Bay Capital Management LP | 1,320,000 | $9.31M | 0.06% | +23,300+1.8% | Added |
| Goldman Sachs Group Inc | 1,371,437 | $9.67M | 0.00% | −319,849−18.9% | Reduced |
| Balyasny Asset Management LLC | 1,384,047 | $9.76M | 0.02% | +1,384,047 | New |
| Mak Capital One LLC | 1,448,461 | $10.2M | 2.04% | +1,448,461 | New |
| AIGH Capital Management LLC | 1,520,492 | $10.7M | 3.75% | +1,520,492 | New |
| Geode Capital Management, LLC | 1,761,264 | $12.4M | 0.00% | +48,835+2.9% | Added |
| Braidwell LP | 2,181,598 | $15.4M | 0.46% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 2,212,187 | $15.6M | 0.05% | −800,000−26.6% | Reduced |
| Pictet Asset Management Holding SA | 2,373,133 | $16.7M | 0.02% | −1,349,599−36.3% | Reduced |
| Vestal Point Capital, LP | 2,675,000 | $18.9M | 0.86% | −325,000−10.8% | Reduced |
| State Street Corp | 3,240,444 | $22.8M | 0.00% | +550,758+20.5% | Added |
| Rubric Capital Management LP | 3,377,071 | $23.8M | 0.32% | +3,377,071 | New |
| Franklin Resources Inc | 3,477,026 | $24.5M | 0.01% | −620,599−15.1% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 4,705,413 | $33.2M | 0.51% | +982,282+26.4% | Added |
| Vanguard Group Inc | 6,181,329 | $43.6M | 0.00% | +4,834+0.1% | Added |
| Atlas Venture Life Science Advisors, LLC | 6,430,257 | $45.3M | 6.02% | 00.0% | Unchanged |
| BlackRock, Inc. | 9,001,455 | $63.5M | 0.00% | −828,976−8.4% | Reduced |
| FMR LLC | 10,097,668 | $71.2M | 0.00% | −1,245,031−11.0% | Reduced |
| Polar Capital Holdings Plc | 0 | $0 | 0.00% | −2,109,177−100.0% | Sold out |
| EcoR1 Capital, LLC | 0 | $0 | 0.00% | −862,068−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −391,280−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −281,528−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −193,857−100.0% | Sold out |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −107,249−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −100,516−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −78,422−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −63,546−100.0% | Sold out |
| Nebula Research & Development LLC | 0 | $0 | 0.00% | −60,665−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −28,100−100.0% | Sold out |
| Ieq Capital, LLC | 0 | $0 | 0.00% | −27,948−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −26,480−100.0% | Sold out |
| Corton Capital Inc. | 0 | $0 | 0.00% | −24,411−100.0% | Sold out |
| Optimize Financial Inc | 0 | $0 | 0.00% | −17,832−100.0% | Sold out |
| Cerity Partners LLC | 0 | $0 | 0.00% | −14,417−100.0% | Sold out |
| Virginia Retirement Systems Et Al | 0 | $0 | 0.00% | −11,700−100.0% | Sold out |
| Wealth Enhancement Advisory Services, LLC | 0 | $0 | 0.00% | −10,262−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −10,682−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −10,330−100.0% | Sold out |
| Steel Peak Wealth Management LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| BIT Capital GmbH | 0 | $0 | 0.00% | −8,413−100.0% | Sold out |
| Quintet Private Bank (Europe) S.A. | 0 | $0 | 0.00% | −3,313−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −1,346−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −1,231−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −918−100.0% | Sold out |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0 | $0 | 0.00% | −750−100.0% | Sold out |