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.
Superinvestors holding DAWN, Q1 2026
1 superinvestor reports holding Day One Biopharmaceuticals, Inc. on Form 13F, worth $33.0M in total. Weight is Day One Biopharmaceuticals, Inc.'s share of each 13F portfolio; actions compare shares with Q4 2025.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| Soros Fund ManagementGeorge Soros | 0.5% | 1,539,100 | $33.0M | New |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of DAWN each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q1 2026
1 superinvestor holding at quarter end
Q4 2024
0 superinvestors holding at quarter end
- Sold out
- Viking Global Investors, Maverick Capital
Q3 2024
2 superinvestors holding at quarter end
- Added
- Maverick Capital (+74.5%)
Q2 2024
2 superinvestors holding at quarter end
- Reduced
- Maverick Capital (−3.6%)
Q1 2024
2 superinvestors holding at quarter end
Q2 2023
1 superinvestor holding at quarter end
- Added
- Viking Global Investors (+64.2%)
Q3 2022
1 superinvestor holding at quarter end
- Reduced
- Viking Global Investors (−16.1%)
Q2 2022
1 superinvestor holding at quarter end
- Added
- Viking Global Investors (+60.5%)
Q4 2021
1 superinvestor holding at quarter end
- Reduced
- Viking Global Investors (−4.5%)
Q3 2021
1 superinvestor holding at quarter end
- Reduced
- Viking Global Investors (−9.7%)
Q2 2021
1 superinvestor holding at quarter end