Day One Biopharmaceuticals, Inc. DAWN
CIK 0001845337 · CUSIP 23954D109
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | FMR LLC CIK 315066 · Amended · View history | $108.64M 13,700,448 shares | 0.01% | +812.98K(+6.30%)Added | SEC filing ↗ Nov 5, 2026 | ▾ |
| 02 | BlackRock, Inc. CIK 2012383 · View history | $53.59M 6,757,929 shares | 0.00% | +602.09K(+9.80%)Added | SEC filing ↗ May 2, 2025 | ▾ |
| 03 | Atlas Venture Life Science Advisors, LLC CIK 1917529 · View history | $50.99M 6,430,257 shares | 9.77% | 0(0.00%)Unchanged | SEC filing ↗ May 14, 2025 | ▾ |
| 04 | VANGUARD GROUP INC CIK 102909 · View history | $47.13M 5,943,243 shares | 0.00% | +94.32K(+1.60%)Added | SEC filing ↗ May 9, 2025 | ▾ |
| 05 | RA CAPITAL MANAGEMENT, L.P. CIK 1346824 · View history | $45.64M 5,755,577 shares | 0.76% | 0(0.00%)Unchanged | SEC filing ↗ May 15, 2025 | ▾ |
| 06 | Alyeska Investment Group, L.P. CIK 1453072 · View history | $32.19M 4,059,764 shares | 0.13% | +1.55M(+61.60%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 07 | FRANKLIN RESOURCES INC CIK 38777 · View history | $31.87M 4,018,370 shares | 0.01% | +135.42K(+3.50%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 08 | Pictet Asset Management Holding SA CIK 1993888 · View history | $28.83M 3,635,580 shares | 0.03% | +145.52K(+4.20%)Added | SEC filing ↗ May 5, 2025 | ▾ |
| 09 | BRAIDWELL LP CIK 1920938 · View history | $28.05M 3,536,853 shares | 0.99% | -1.34M(-27.40%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 10 | Estuary Capital Management LP CIK 1965005 · View history | $26.38M 3,326,849 shares | 6.40% | -389.93K(-10.50%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 11 | DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) CIK 1009258 · View history | $23.48M 2,960,740 shares | 0.47% | +364.71K(+14.00%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 12 | STATE STREET CORP CIK 93751 · View history | $21.46M 2,706,699 shares | 0.00% | -394.98K(-12.70%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 13 | Vestal Point Capital, LP CIK 1974915 · View history | $20.60M 2,598,127 shares | 1.47% | +1.16M(+80.40%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 14 | Polar Capital Holdings Plc CIK 1837309 · View history | $18.64M 2,350,000 shares | 0.11% | +2.17M(+1,170.30%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 15 | GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history | $12.45M 1,569,918 shares | 0.00% | +1.10M(+232.40%)Added | SEC filing ↗ May 16, 2025 | ▾ |
| 16 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $12.22M 1,540,465 shares | 0.00% | +77.48K(+5.30%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 17 | CITADEL ADVISORS LLC CIK 1423053 · View history | $10.62M 1,339,018 shares | 0.01% | +727.71K(+119.00%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 18 | MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history | $10.47M 1,320,095 shares | 0.01% | +1.13M(+587.20%)Added | SEC filing ↗ May 15, 2025 | ▾ |
| 19 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $10.33M 1,302,965 shares | 0.00% | +375.95K(+40.60%)Added | SEC filing ↗ May 13, 2025 | ▾ |
| 20 | Boxer Capital Management, LLC CIK 2018299 · Amended · View history | $9.44M 1,189,943 shares | 2.84% | 0(0.00%)Unchanged | SEC filing ↗ May 15, 2025 | ▾ |
Showing 20 / 186 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 186 reporting institutions.
This page includes 20 of 186 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 186 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"23954D109","quarter":"2025Q1","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.