Day One Biopharmaceuticals, Inc.
DAWNDelisted- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001845337
Day One Biopharmaceuticals, Inc. was delisted in 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 2026
Institutional positions in Day One Biopharmaceuticals, Inc. as of Jun 30, 2026. 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
DAWN is no longer listed, and 13F filings after Q1 2026 list far fewer holders. See Q1 2026
- Institutional holders
- 1
- −204 vs. Q1 2026
- Shares held
- 165
- −86.3M (−100.0%) vs. Q1 2026
- Total value
- $3.55K
- −$1.84B (−100.0%) vs. Q1 2026
- New holders
- 0
- 0 more added
- Sold out
- 204
- 1 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | $758.9M |
| Q3 2025 | 173 | $603.9M |
| Q2 2025 | 174 | $562.2M |
| Q1 2025 | 184 | $747.2M |
| Q4 2024 | 164 | $1.19B |
| Q3 2024 | 166 | $1.28B |
| Q2 2024 | 157 | $1.03B |
| Q1 2024 | 148 | $1.21B |
| Q4 2023 | 139 | $1.12B |
| Q3 2023 | 130 | $951.5M |
| Q2 2023 | 140 | $941.0M |
| Q1 2023 | 126 | $938.2M |
| Q4 2022 | 109 | $1.30B |
| Q3 2022 | 93 | $1.21B |
| Q2 2022 | 87 | $1.06B |
| Q1 2022 | 66 | $429.6M |
| Q4 2021 | 58 | $707.6M |
| Q3 2021 | 45 | $452.9M |
| Q2 2021 | 33 | $418.3M |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Day One Biopharmaceuticals, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| IFP Advisors, Inc | 165 | $3.55K | 0.00% | −475−74.2% | Reduced |
| BlackRock, Inc. | 0 | $0 | 0.00% | −7,044,487−100.0% | Sold out |
| Glazer Capital, LLC | 0 | $0 | 0.00% | −4,683,687−100.0% | Sold out |
| FIL Ltd | 0 | $0 | 0.00% | −4,131,907−100.0% | Sold out |
| Kryger Capital LLC | 0 | $0 | 0.00% | −3,896,485−100.0% | Sold out |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −3,723,131−100.0% | Sold out |
| Vanguard Capital Management LLC | 0 | $0 | 0.00% | −3,357,684−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −3,134,753−100.0% | Sold out |
| State Street Corp | 0 | $0 | 0.00% | −2,869,876−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −2,625,235−100.0% | Sold out |
| CNH Partners LLC | 0 | $0 | 0.00% | −2,462,154−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −2,305,123−100.0% | Sold out |
| Vanguard Portfolio Management LLC | 0 | $0 | 0.00% | −2,095,813−100.0% | Sold out |
| Geode Capital Management, LLC | 0 | $0 | 0.00% | −1,954,735−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −1,954,552−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −1,927,557−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −1,902,868−100.0% | Sold out |
| O'Connor Alternative Investments LLC | 0 | $0 | 0.00% | −1,867,553−100.0% | Sold out |
| Nuveen, LLC | 0 | $0 | 0.00% | −1,823,998−100.0% | Sold out |
| Perceptive Advisors LLC | 0 | $0 | 0.00% | −1,755,799−100.0% | Sold out |
| Oddo BHF Asset Management SAS | 0 | $0 | 0.00% | −1,550,000−100.0% | Sold out |
| Soros Fund Management LLCSuperinvestorSoros Fund Management | 0 | $0 | 0.00% | −1,539,100−100.0% | Sold out |
| Vivaldi Asset Management, LLC | 0 | $0 | 0.00% | −1,496,007−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −1,296,984−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −979,238−100.0% | Sold out |
| DAFNA Capital Management LLC | 0 | $0 | 0.00% | −978,463−100.0% | Sold out |
| Water Island Capital LLC | 0 | $0 | 0.00% | −944,247−100.0% | Sold out |
| Alpine Associates Management Inc. | 0 | $0 | 0.00% | −925,000−100.0% | Sold out |
| Dimensional Fund Advisors LP | 0 | $0 | 0.00% | −819,371−100.0% | Sold out |
| Pentwater Capital Management LP | 0 | $0 | 0.00% | −800,000−100.0% | Sold out |
| Morgan Stanley | 0 | $0 | 0.00% | −687,107−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −670,000−100.0% | Sold out |
| Northern Trust Corp | 0 | $0 | 0.00% | −666,180−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −645,173−100.0% | Sold out |
| Healthcare of Ontario Pension Plan Trust Fund | 0 | $0 | 0.00% | −643,738−100.0% | Sold out |
| Polar Asset Management Partners Inc. | 0 | $0 | 0.00% | −630,410−100.0% | Sold out |
| Charles Schwab Investment Management Inc | 0 | $0 | 0.00% | −617,561−100.0% | Sold out |
| TIG Advisors, LLC | 0 | $0 | 0.00% | −613,918−100.0% | Sold out |
| Alliancebernstein L.P. | 0 | $0 | 0.00% | −1,214,783−100.0% | Sold out |
| Beryl Capital Management LLC | 0 | $0 | 0.00% | −514,114−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −497,365−100.0% | Sold out |
| Vanguard Fiduciary Trust Co | 0 | $0 | 0.00% | −478,839−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −475,436−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −473,543−100.0% | Sold out |
| Gabelli Funds LLC | 0 | $0 | 0.00% | −464,097−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −450,000−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −444,467−100.0% | Sold out |
| Kennedy Capital Management, Inc. | 0 | $0 | 0.00% | −436,732−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −415,706−100.0% | Sold out |
| Hennion & Walsh Asset Management, Inc. | 0 | $0 | 0.00% | −367,134−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −362,641−100.0% | Sold out |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −337,767−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −328,638−100.0% | Sold out |
| Gabelli & Co Investment Advisers, Inc. | 0 | $0 | 0.00% | −325,350−100.0% | Sold out |
| Public Sector Pension Investment Board | 0 | $0 | 0.00% | −236,000−100.0% | Sold out |
| Capstone Investment Advisors, LLC | 0 | $0 | 0.00% | −236,000−100.0% | Sold out |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −231,043−100.0% | Sold out |
| Abc Arbitrage SA | 0 | $0 | 0.00% | −228,817−100.0% | Sold out |
| Alberta Investment Management Corp | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −189,057−100.0% | Sold out |
| Eversept Partners, LP | 0 | $0 | 0.00% | −183,902−100.0% | Sold out |
| Groupe la Francaise | 0 | $0 | 0.00% | −179,495−100.0% | Sold out |
| Slotnik Capital, LLC | 0 | $0 | 0.00% | −166,837−100.0% | Sold out |
| Invesco Ltd. | 0 | $0 | 0.00% | −159,898−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Massachusetts Financial Services Co | 0 | $0 | 0.00% | −147,012−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −141,500−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −136,991−100.0% | Sold out |
| Credit Industriel Et Commercial | 0 | $0 | 0.00% | −135,420−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −123,673−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −122,922−100.0% | Sold out |
| Price T Rowe Associates Inc | 0 | $0 | 0.00% | −119,288−100.0% | Sold out |
| Rhumbline Advisers | 0 | $0 | 0.00% | −118,557−100.0% | Sold out |
| Sagefield Capital LP | 0 | $0 | 0.00% | −110,199−100.0% | Sold out |
| Nomura Asset Management International Inc. | 0 | $0 | 0.00% | −110,000−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −104,598−100.0% | Sold out |
| Maven Securities LTD | 0 | $0 | 0.00% | −103,900−100.0% | Sold out |
| Virtus Investment Advisers, Inc. | 0 | $0 | 0.00% | −100,990−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −99,747−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −88,278−100.0% | Sold out |
| Gardner Lewis Asset Management L P | 0 | $0 | 0.00% | −84,768−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −84,092−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −78,379−100.0% | Sold out |
| Harvest Management LLC | 0 | $0 | 0.00% | −75,000−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −67,463−100.0% | Sold out |
| Deutsche Bank AG | 0 | $0 | 0.00% | −66,445−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −64,464−100.0% | Sold out |
| Mint Tower Capital Management B.V. | 0 | $0 | 0.00% | −60,000−100.0% | Sold out |
| Rafferty Asset Management, LLC | 0 | $0 | 0.00% | −59,207−100.0% | Sold out |
| Susquehanna Portfolio Strategies, LLC | 0 | $0 | 0.00% | −57,379−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −56,673−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −56,429−100.0% | Sold out |
| Timothy G. Youngquist 2020 Irrevocable Trust | 0 | $0 | 0.00% | −53,399−100.0% | Sold out |
| Franklin Resources Inc | 0 | $0 | 0.00% | −52,623−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −52,342−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −51,763−100.0% | Sold out |
| Vanguard Asset Management, Ltd | 0 | $0 | 0.00% | −50,545−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −49,923−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −44,101−100.0% | Sold out |