Day One Biopharmaceuticals IDAWN
13F holders, Q1 2026 (March 31)208holders +24
77new positions
56sold out
7famous investors
$21.27avg. 13F price*
At the end of Q1 2026, 208 institutions reported holding Day One Biopharmaceuticals I (DAWN) in their 13F filings, up 24 from Q4 2025. 77 opened new positions and 56 sold out. The largest holders were BlackRock, Inc. ($151.0M), Glazer Capital, LLC ($100.4M) and FIL Ltd ($88.6M). 7 famous investors held it, including George Soros (0.6% of Soros Fund Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Day One Biopharmaceuticals I
- CUSIP
- 23954D109
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 77 | $613.1M |
| Exits | 56 | $213.7M |
All 13F filers, Q4 2025 → Q1 2026: 40,696,729 shares bought and 40,443,641 shares sold, net +253,088 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 208 holders
| BlackRock, Inc. | 0.00% | Reduce -20.3% | 7,044,487 | $151.0M |
| Glazer Capital, LLC | 2.23% | New | 4,683,687 | $100.4M |
| FIL Ltd | 0.07% | New | 4,131,907 | $88.6M |
| Kryger Capital LLC | 5.91% | — | 3,896,485 | $83.5M |
| Deerfield Management Company, L.P. | 1.11% | No change | 3,723,131 | $79.8M |
| Vanguard Capital Management LLC | 0.00% | — | 3,357,684 | $72.0M |
| JPMorgan Chase & Co. | 0.00% | Add +7101.4% | 3,134,753 | $67.1M |
| State Street Corp. | 0.00% | Reduce -33.1% | 2,869,876 | $61.5M |
| Balyasny Asset Management L.P. | 0.12% | Add +76.2% | 2,625,235 | $56.3M |
| AQR Arbitrage LLC | 1.04% | New | 2,462,154 | $52.8M |
| UBS Group AG | 0.01% | Add +1250.2% | 2,305,123 | $49.4M |
| Vanguard Portfolio Management LLC | 0.00% | — | 2,095,813 | $44.9M |
| Geode Capital Management, LLC | 0.00% | Add +4.1% | 1,954,735 | $41.9M |
| Qube Research & Technologies Ltd | 0.06% | Add +31.5% | 1,954,552 | $41.9M |
| Millennium Management | 0.03% | Add +42.8% | 1,927,557 | $41.3M |
| Bank of America Corp. | 0.00% | Add +75.6% | 1,902,868 | $40.8M |
| O'Connor Alternative Investments LLC | 2.27% | — | 1,867,553 | $40.0M |
| Nuveen, LLC | 0.01% | Add +249.1% | 1,823,998 | $39.1M |
| Perceptive Advisors LLC | 0.75% | New | 1,755,799 | $37.6M |
| Oddo BHF Asset Management Sas | 1.32% | New | 1,550,000 | $33.2M |
| Soros Fund Management | 0.61% | New | 1,539,100 | $33.0M |
| First Trust Capital Management L.P. | 1.69% | New | 1,496,007 | $32.1M |
| Renaissance Technologies | 0.04% | Reduce -0.6% | 1,296,984 | $27.8M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -35.0% | 979,238 | $21.0M |
| DAFNA Capital Management LLC | 4.84% | Reduce -2.1% | 978,463 | $21.0M |
| Water Island Capital LLC | 2.85% | New | 944,247 | $20.2M |
| Alpine Associates Management Inc. | 1.17% | New | 925,000 | $19.8M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -21.0% | 819,371 | $17.6M |
| Pentwater Capital Management LP | 0.12% | New | 800,000 | $17.2M |
| Morgan Stanley | 0.00% | Reduce -55.7% | 687,107 | $14.7M |
| Hudson Bay Capital Management LP | 0.10% | Reduce -60.6% | 670,000 | $14.4M |
| Northern Trust Corp. | 0.00% | Add +8.0% | 666,180 | $14.3M |
| Magnetar Financial LLC | 0.15% | New | 645,173 | $13.8M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.02% | New | 643,738 | $13.8M |
| Polar Asset Management Partners Inc. | 0.44% | New | 630,410 | $13.5M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -2.5% | 617,561 | $13.2M |
| TIG Advisors, LLC | 0.63% | New | 613,918 | $13.2M |
| Janus Henderson Group PLC | 0.01% | Add +2465.4% | 546,428 | $11.7M |
| Alliancebernstein L.P. | 0.00% | Add +1692.0% | 1,214,783 | $11.3M |
| Beryl Capital Management LLC | 10.15% | New | 514,114 | $11.0M |
| Jump Financial, LLC | 0.18% | Reduce -25.4% | 497,365 | $10.7M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 478,839 | $10.3M |
| Jane Street Group, LLC | 0.01% | Reduce -43.8% | 475,436 | $10.2M |
| Susquehanna International Group, LLP | 0.01% | Reduce -35.8% | 473,543 | $10.2M |
| Gabelli Funds LLC | 0.07% | New | 464,097 | $10.0M |
| Cinctive Capital Management LP | 0.63% | New | 450,000 | $9.6M |
| AQR Capital Management | 0.00% | Add +2.9% | 444,467 | $9.5M |
| Kennedy Capital Management LLC | 0.20% | Reduce -19.6% | 436,732 | $9.4M |
| Squarepoint Ops LLC | 0.02% | Add +313.2% | 415,706 | $8.9M |
| Hennion & Walsh Asset Management, Inc. | 0.26% | Add +17.1% | 367,134 | $7.9M |
| LMR Partners LLP | 0.09% | New | 362,641 | $7.8M |
| BNP Paribas Financial Markets | 0.00% | Reduce -25.5% | 337,767 | $7.2M |
| Marshall Wace, LLP | 0.01% | New | 328,638 | $7.0M |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 1.04% | New | 325,350 | $7.0M |
| Capstone Investment Advisors, LLC | 0.06% | New | 236,000 | $5.1M |
| Public Sector Pension Investment Board | 0.02% | New | 236,000 | $5.1M |
| Bank of New York Mellon Corp | 0.00% | Add +9.2% | 231,043 | $5.0M |
| Abc Arbitrage SA | 0.65% | New | 228,817 | $4.9M |
| Alberta Investment Management Corp | 0.03% | New | 200,000 | $4.3M |
| Man Group plc | 0.01% | Add +1.5% | 200,000 | $4.3M |
| Woodline Partners LP | 0.02% | New | 189,057 | $4.1M |
| Eversept Partners, LP | 0.26% | New | 183,902 | $3.9M |
| Groupe la Francaise | 0.05% | New | 179,495 | $3.8M |
| Slotnik Capital, LLC | 1.06% | New | 166,837 | $3.6M |
| Invesco Ltd. | 0.00% | Add +29.0% | 159,898 | $3.4M |
| Skandinaviska Enskilda Banken AB (publ) | 0.07% | New | 150,000 | $3.2M |
| Massachusetts Financial Services Co. | 0.00% | Reduce -2.6% | 147,012 | $3.2M |
| Swiss National Bank | 0.00% | No change | 141,500 | $3.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +10.1% | 136,991 | $2.9M |
| Credit Industriel Et Commercial | 0.51% | New | 135,420 | $2.9M |
| Versor Investments LP | 6.49% | New | 123,673 | $2.7M |
| SG Americas Securities, LLC | 0.00% | Reduce -64.9% | 122,922 | $2.6M |
| T. Rowe Price Associates Inc. | 0.00% | Add +16.4% | 119,288 | $2.6M |
| Rhumbline Advisers | 0.00% | Add +6.2% | 118,557 | $2.5M |
| Sagefield Capital LP | 0.17% | New | 110,199 | $2.4M |
| Nomura Asset Management International Inc. | 0.00% | No change | 110,000 | $2.4M |
| Sei Investments Co. | 0.00% | Add +178.8% | 104,598 | $2.2M |
| Maven Securities LTD | 0.13% | New | 103,900 | $2.2M |
| Virtus Investment Advisers, LLC | 0.60% | Add +23.5% | 100,990 | $2.2M |
| Oxford Asset Management LLP | 0.86% | New | 99,747 | $2.1M |
| American Century Companies Inc. | 0.00% | Add +11.8% | 88,278 | $1.9M |
| Gardner Lewis Asset Management L P | 0.39% | New | 84,768 | $1.8M |
| Alps Advisors Inc. | 0.01% | Reduce -0.3% | 84,092 | $1.8M |
| Aquatic Capital Management LLC | 0.05% | Add +1046.7% | 78,379 | $1.7M |
| Harvest Management LLC | 0.86% | New | 75,000 | $1.6M |
| California State Teachers Retirement System | 0.00% | Reduce -6.6% | 67,463 | $1.4M |
| Deutsche Bank AG | 0.00% | Add +16.6% | 66,445 | $1.4M |
| Simplex Trading, LLC | 0.04% | New | 64,464 | $1.4M |
| Mint Tower Capital Management B.V. | 0.28% | New | 60,000 | $1.3M |
| Rafferty Asset Management, LLC | 0.01% | Reduce -62.3% | 59,207 | $1.3M |
| Susquehanna Portfolio Strategies, LLC | 0.02% | No change | 57,379 | $1.2M |
| Prelude Capital Management, LLC | 0.09% | New | 56,673 | $1.2M |
| Wells Fargo & Company | 0.00% | Reduce -50.8% | 56,429 | $1.2M |
| Timothy G. Youngquist 2020 Irrevocable Trust | 0.56% | New | 53,399 | $1.1M |
| Franklin Resources Inc. | 0.00% | Reduce -0.2% | 52,623 | $1.1M |
| Mariner, LLC | 0.00% | Add +67.9% | 52,342 | $1.1M |
| Legal & General Group Plc | 0.00% | Reduce -18.7% | 51,763 | $1.1M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 50,545 | $1.1M |
| ADAR1 Capital Management, LLC | 0.06% | New | 49,923 | $1.1M |
| MetLife Investment Management, LLC | 0.00% | Add +1.0% | 44,101 | $946K |
| Fisher Asset Management | 0.00% | Reduce -77.2% | 43,698 | $937K |
| Blackstone Inc. | 0.00% | New | 41,567 | $891K |
| Two Sigma Investments, LP | 0.00% | New | 41,500 | $890K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -10.2% | 40,964 | $878K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +4.7% | 40,315 | $864K |
| HRT Financial LP | 0.00% | Reduce -91.6% | 37,944 | $813K |
| STRS Ohio | 0.00% | Add +34.9% | 37,900 | $813K |
| Manufacturers Life Insurance Company, The | 0.00% | Add +49.3% | 36,186 | $776K |
| ProShare Advisors LLC | 0.00% | Add +76.0% | 33,247 | $713K |
| Tidal Investments LLC | 0.00% | New | 32,074 | $688K |
| Point72 Asset Management | 0.00% | Reduce -79.5% | 31,938 | $685K |
| Creative Planning | 0.00% | Add +26.2% | 31,931 | $685K |
| Ieq Capital, LLC | 0.00% | New | 31,854 | $683K |
| Twin Securities, Inc. | 0.34% | New | 31,626 | $678K |
| Barclays PLC | 0.00% | Reduce -89.7% | 30,163 | $647K |
| Vanguard Global Advisers, LLC | 0.00% | — | 29,783 | $639K |
| Engineers Gate Manager LP | 0.01% | New | 29,093 | $624K |
| Canada Pension Plan Investment Board | 0.00% | Reduce -27.0% | 28,100 | $602K |
| Profund Advisors LLC | 0.02% | Reduce -53.2% | 27,210 | $583K |
| PenderFund Capital Management Ltd. | 0.27% | New | 26,800 | $575K |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.00% | New | 26,500 | $568K |
| Cwm, LLC | 0.00% | Add +199.1% | 25,043 | $537K |
| Polymer Capital Management (US) LLC | 0.08% | New | 24,872 | $533K |
| New York State Common Retirement Fund | 0.00% | Add +103.9% | 24,732 | $530K |
| State of New Jersey Common Pension Fund D | 0.00% | New | 24,563 | $527K |
| State of Wisconsin Investment Board | 0.00% | Add +3.7% | 24,299 | $521K |
| CSS LLC | 0.08% | New | 24,000 | $515K |
| Inspire Advisors, LLC | 0.04% | New | 23,681 | $508K |
| FMR LLC | 0.00% | Reduce -99.6% | 23,640 | $507K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +8.8% | 22,203 | $476K |
| D. E. Shaw & Co. | 0.00% | Reduce -1.3% | 21,626 | $464K |
| Intech Investment Management LLC | 0.00% | Reduce -42.6% | 20,680 | $443K |
| Arizona State Retirement System | 0.00% | Reduce -2.8% | 19,742 | $423K |
| Integrated Wealth Concepts LLC | 0.00% | New | 19,088 | $409K |
| Inspire Investing, LLC | 0.02% | New | 18,911 | $405K |
| Vanguard Investments Australia, Ltd. | 0.00% | — | 18,569 | $398K |
| Jain Global LLC | 0.01% | New | 18,333 | $393K |
| China Universal Asset Management Co., Ltd. | 0.03% | Add +9.6% | 18,331 | $393K |
| Cerity Partners LLC | 0.00% | Add +57.1% | 18,197 | $390K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 17,880 | $383K |
| Quantinno Capital Management LP | 0.00% | Add +9.8% | 17,556 | $376K |
| Entropy Technologies, LP | 0.02% | Reduce -42.0% | 17,040 | $365K |
| Mercer Global Advisors Inc. | 0.00% | New | 16,411 | $352K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | New | 15,812 | $339K |
| Arrowstreet Capital, Limited Partnership | 0.00% | Reduce -94.0% | 15,294 | $328K |
| Voleon Capital Management LP | 0.01% | New | 15,032 | $322K |
| Scientech Research LLC | 0.26% | New | 14,342 | $307K |
| Quantbot Technologies LP | 0.01% | New | 14,101 | $302K |
| Citigroup Inc. | 0.00% | Reduce -42.5% | 13,848 | $297K |
| Carmignac Gestion | 0.00% | New | 13,691 | $294K |
| Voya Investment Management LLC | 0.00% | No change | 13,242 | $284K |
| Pictet Asset Management Holding SA | 0.00% | Reduce -99.6% | 13,034 | $279K |
| Prudential Financial Inc. | 0.00% | New | 12,260 | $263K |
| Axq Capital, LP | 0.03% | Reduce -62.5% | 12,147 | $260K |
| Virtus Advisers, LLC | 0.11% | No change | 11,200 | $240K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -92.2% | 11,134 | $239K |
| Wolverine Asset Management LLC | 0.01% | New | 9,500 | $204K |
| Lazard Asset Management LLC | 0.00% | Reduce -59.4% | 9,364 | $201K |
| Meteora Capital, LLC | 0.01% | New | 8,900 | $191K |
| Chicago Capital Management, LLC | 0.34% | New | 10,000 | $162K |
| Ameritas Investment Partners, Inc. | 0.00% | Add +6.8% | 6,422 | $138K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +262.9% | 5,930 | $127K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +8.0% | 5,388 | $116K |
| Tsfg, LLC | 0.01% | No change | 3,400 | $73K |
| Caitong International Asset Management Co., Ltd | 0.01% | Add +726.1% | 2,503 | $54K |
| Sterling Capital Management LLC | 0.00% | Reduce -43.9% | 2,493 | $53K |
| GF Fund Management Co. LTD. | 0.00% | Add +13.7% | 2,294 | $49K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 2,024 | $43K |
| Royal Bank of Canada | 0.00% | Reduce -53.5% | 1,911 | $41K |
| Bullock Wealth Management Group | 0.02% | No change | 1,443 | $31K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.00% | Add +42.4% | 1,088 | $23K |
| Larson Financial Group LLC | 0.00% | No change | 1,022 | $22K |
| Allworth Financial LP | 0.00% | Add +421.9% | 1,002 | $21K |
| Fifth Third Bancorp | 0.00% | New | 774 | $17K |
| Hickory Point Bank & Trust | 0.01% | New | 750 | $16K |
| Versant Capital Management, Inc | 0.00% | Add +22.9% | 742 | $16K |
| IFP Advisors, Inc | 0.00% | Add +21.0% | 640 | $14K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +71.2% | 637 | $14K |
| GAMMA Investing LLC | 0.00% | Add +468.9% | 586 | $13K |
| Essential Partners LLC | 0.00% | Add +49.6% | 431 | $9K |
| US Bancorp \de | 0.00% | Add +56.8% | 414 | $9K |
| Root Financial Partners, LLC | 0.00% | Add +5483.3% | 335 | $7K |
| Abound Financial, LLC | 0.00% | No change | 327 | $7K |
| Arax Advisory Partners | 0.00% | Add +2591.7% | 323 | $7K |
| Rothschild Investment LLC | 0.00% | Add +24.2% | 282 | $6K |
| MAI Capital Management | 0.00% | Add +323.7% | 250 | $5K |
| Nisa Investment Advisors, LLC | 0.00% | Add +310.5% | 234 | $5K |
| Osaic Holdings, Inc. | 0.00% | Reduce -99.4% | 229 | $5K |
| Farther Finance Advisors, LLC | 0.00% | Add +260.0% | 216 | $5K |
| True Wealth Design, LLC | 0.00% | Add +392.3% | 128 | $3K |
| Parkside Financial Bank & Trust | 0.00% | No change | 75 | $2K |
| Sunbelt Securities, Inc. | 0.00% | No change | 66 | $1K |
| SBI Securities Co., Ltd. | 0.00% | Reduce -25.9% | 60 | $1K |
| Wealth Preservation Advisors, LLC | 0.00% | New | 53 | $1K |
| PNC Financial Services Group, Inc. | 0.00% | Add +32.3% | 41 | $879 |
| Spire Wealth Management | 0.00% | New | 40 | $858 |
| SJS Investment Consulting Inc. | 0.00% | Add +95.0% | 39 | $837 |
| Signaturefd, LLC | 0.00% | No change | 33 | $708 |
| Optiver Holding B.V. | 0.00% | Reduce -89.0% | 32 | $686 |
| SHP Wealth Management | 0.00% | New | 25 | $536 |
| Fortitude Family Office, LLC | 0.00% | New | 23 | $493 |
| Creative Financial Designs Inc. | 0.00% | New | 20 | $429 |
| Pinnacle Wealth Planning Services, Inc. | 0.00% | New | 19 | $407 |
| Advisory Services Network, LLC | 0.00% | New | 11 | $236 |
| Smartleaf Asset Management LLC | 0.00% | No change | 5 | $107 |
| Jones Financial Companies LLLP | 0.00% | Reduce -99.8% | 2 | $43 |
| Freestone Grove Partners LP | 0.00% | New | 2 | $43 |
| Covestor Ltd | 0.00% | Reduce -94.9% | 12 | $0 |
"% of holder's portfolio" is DAWN's weight in each manager's 13F, not the share of Day One Biopharmaceuticals I the manager owns.