Companies / Day One Biopharmaceuticals, Inc. / Activity
Activity — Day One Biopharmaceuticals, Inc.
94 moves.
Top impactInsider · CEO movesInsider · biggest buysInsider · biggest sellsInstitution · biggest movesInstitution · new positions
| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | BlackRock, Inc. 13F manager | Exit | Common stock | $-82.37M | -8.8M -100.00% | 0 | high |
| Q1 2026 as of | AQR Arbitrage LLC 13F manager | New | Common stock | $52.79M | +2.5M | 2,462,154 2.38% of shares | high |
| Q2 2026 as of | State Street Corporation 13F manager | Exit | Common stock | $-39.98M | -4.3M -100.00% | 0 | medium |
| Q1 2026 as of | Perceptive Advisors LLC 13F manager | New | Common stock | $37.64M | +1.8M | 1,755,799 1.70% of shares | medium |
| Q1 2026 as of | Soros Fund Management LLC 13F manager | New | Common stock | $33.00M | +1.5M | 1,539,100 1.49% of shares | medium |
| Q1 2026 as of | Balyasny Asset Management L.P. 13F manager | Add | Common stock | $24.34M | +1.1M +76.20% | 2,625,235 2.54% of shares | medium |
| Q1 2026 as of | Hudson Bay Capital Management LP 13F manager | Trim | Common stock | $-22.08M | -1.0M -60.59% | 670,000 0.65% of shares | medium |
| Q1 2026 as of | Water Island Capital LLC 13F manager | New | Common stock | $20.24M | +944K | 944,247 0.91% of shares | medium |
| Q1 2026 as of | Alpine Associates Management Inc. 13F manager | New | Common stock | $19.83M | +925K | 925,000 0.90% of shares | medium |
| Q2 2026 as of | AIGH Capital Management LLC 13F manager | Exit | Common stock | $-18.57M | -2.0M -100.00% | 0 | medium |
| Q1 2026 as of | Magnetar Financial LLC 13F manager | New | Common stock | $13.83M | +645K | 645,173 0.62% of shares | medium |
| Q1 2026 as of | Polar Asset Management Partners Inc. 13F manager | New | Common stock | $13.52M | +630K | 630,410 0.61% of shares | medium |
| Q1 2026 as of | TIG Advisors, LLC 13F manager | New | Common stock | $13.16M | +614K | 613,918 0.59% of shares | medium |
| Q1 2026 as of | Millennium Management LLC 13F manager | Add | Common stock | $12.38M | +578K +42.79% | 1,927,557 1.87% of shares | medium |
| Q1 2026 as of | Janus Henderson Group PLC 13F manager | Add | Common stock | $11.26M | +525K +2465.39% | 546,428 0.53% of shares | medium |
| Q1 2026 as of | AllianceBernstein L.P. 13F manager | Add | Common stock | $10.69M | +1.1M +1691.98% | 1,214,783 1.18% of shares | medium |
| Q1 2026 as of | Gabelli Funds LLC 13F manager | New | Common stock | $9.95M | +464K | 464,097 0.45% of shares | medium |
| Q2 2025 as of | Boxer Capital Management, LLC 13F manager | Exit | Common stock | $-9.44M | -1.2M -100.00% | 0 | medium |
| Q1 2026 as of | Mak Capital One LLC 13F manager | Exit | Common stock | $-7.70M | -826K -100.00% | 0 | medium |
| Q1 2026 as of | Marshall Wace, LLP 13F manager | New | Common stock | $7.05M | +329K | 328,638 0.32% of shares | medium |
| Q1 2026 as of | Schroder Investment Management Group 13F manager | Exit | Common stock | $-5.23M | -570K -100.00% | 0 | medium |
| Q1 2026 as of | Arrowstreet Capital, Limited Partnership 13F manager | Trim | Common stock | $-5.14M | -240K -94.00% | 15,294 0.01% of shares | medium |
| Q1 2026 as of | Public Sector Pension Investment Board 13F manager | New | Common stock | $5.06M | +236K | 236,000 0.23% of shares | medium |
| Q1 2026 as of | Credit Industriel Et Commercial 13F manager | New | Common stock | $2.90M | +135K | 135,420 0.13% of shares | low |
| Q1 2026 as of | BNP Paribas Financial Markets 13F manager | Trim | Common stock | $-2.48M | -116K -25.49% | 337,767 0.33% of shares | low |
| Q1 2026 as of | Rafferty Asset Management, LLC 13F manager | Trim | Common stock | $-2.10M | -98K -62.29% | 59,207 0.06% of shares | low |
| Q1 2024 as of | Barclays PLC 13F manager | Trim | Common stock | $-1.96M | -118K -63.70% | 67,466 0.07% of shares | low |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common stock | $1.65M | +77K +4.09% | 1,954,735 1.89% of shares | low |
| Q1 2026 as of | Harvest Management LLC 13F manager | New | Common stock | $1.61M | +75K | 75,000 0.07% of shares | low |
| Q1 2026 as of | Norges Bank 13F manager | Exit | Common stock | $-1.58M | -169K -100.00% | 0 | low |
| Q2 2025 as of | Barclays PLC 13F manager | Add | Common stock | $1.25M | +193K +124.28% | 348,109 0.34% of shares | low |
| Q1 2026 as of | Prelude Capital Management, LLC 13F manager | New | Common stock | $1.22M | +57K | 56,673 0.05% of shares | low |
| Q2 2026 as of | Timothy G. Youngquist 2020 Irrevocable Trust 13F manager | Exit | Common stock | $-1.14M | -53K -100.00% | 0 | low |
| Q1 2026 as of | Timothy G. Youngquist 2020 Irrevocable Trust 13F manager | New | Common stock | $1.14M | +53K | 53,399 0.05% of shares | low |
| Q3 2024 as of | Barclays PLC 13F manager | Add | Common stock | $1.11M | +80K +143.50% | 135,373 0.13% of shares | low |
| Q1 2026 as of | Nomura Holdings Inc 13F manager | Exit | Common stock | $-1.07M | -115K -100.00% | 0 | low |
| Q4 2025 as of | Bank of America Corp /De 13F manager | Trim | Common stock | $-1.01M | -108K -9.06% | 1,083,818 1.05% of shares | low |
| Q1 2026 as of | Blackstone Inc 13F manager | New | Common stock | $891.2K | +42K | 41,567 0.04% of shares | low |
| Q1 2026 as of | Two Sigma Investments, LP 13F manager | New | Common stock | $889.8K | +42K | 41,500 0.04% of shares | low |
| Q2 2023 as of | Barclays PLC 13F manager | Add | Common stock | $845.8K | +71K +96.28% | 144,403 0.14% of shares | low |
| Q4 2023 as of | Barclays PLC 13F manager | Add | Common stock | $787.8K | +54K +40.91% | 185,839 0.18% of shares | low |
| Q1 2026 as of | Los Angeles Capital Management LLC 13F manager | Exit | Common stock | $-706.2K | -100K -100.00% | 0 | low |
| Q1 2026 as of | Twin Securities, Inc. 13F manager | New | Common stock | $678.1K | +32K | 31,626 0.03% of shares | low |
| Q1 2026 as of | Profund Advisors LLC 13F manager | Trim | Common stock | $-662.9K | -31K -53.19% | 27,210 0.03% of shares | low |
| Q1 2026 as of | Commonwealth of Pennsylvania Public School Empls Retrmt Sys 13F manager | New | Common stock | $568.2K | +27K | 26,500 0.03% of shares | low |
| Q2 2026 as of | Deutsche Bank AG 13F manager | Exit | Common stock | $-531.3K | -57K -100.00% | 0 | low |
| Q1 2026 as of | Css LLC/IL 13F manager | New | Common stock | $514.6K | +24K | 24,000 0.02% of shares | low |
| Q4 2025 as of | Barclays PLC 13F manager | Trim | Common stock | $-511.3K | -55K -15.80% | 292,325 0.28% of shares | low |
| Q1 2023 as of | Barclays PLC 13F manager | Trim | Common stock | $-481.1K | -36K -32.85% | 73,569 0.07% of shares | low |
| Q1 2026 as of | Graham Capital Management, L.P. 13F manager | Exit | Common stock | $-469.3K | -50K -100.00% | 0 | low |