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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 2021

Institutional positions in Day One Biopharmaceuticals, Inc. as of Jun 30, 2021. 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

Institutional holders
33
+33 vs. Q1 2021
Shares held
17.7M
+17.7M vs. Q1 2021
Total value
$401.1M
+$401.1M vs. Q1 2021
New holders
33
0 more added
Sold out
0
0 more reduced

Compare with Q1 2021: 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.

Institutional holdersQ2 2021: 33 institutions
Q1 2021: 0 institutionsQ2 2021: 33 institutionsQ3 2021: 45 institutionsQ4 2021: 58 institutionsQ1 2022: 66 institutionsQ2 2022: 87 institutionsQ3 2022: 93 institutionsQ4 2022: 109 institutionsQ1 2023: 126 institutionsQ2 2023: 140 institutionsQ3 2023: 130 institutionsQ4 2023: 139 institutionsQ1 2024: 148 institutionsQ2 2024: 157 institutionsQ3 2024: 166 institutionsQ4 2024: 164 institutionsQ1 2025: 184 institutionsQ2 2025: 174 institutionsQ3 2025: 173 institutionsQ4 2025: 184 institutionsQ1 2026: 208 institutionsQ2 2026: 1 institution
Value heldQ2 2021: $418.3M
Q1 2021: $0Q2 2021: $418.3MQ3 2021: $452.9MQ4 2021: $707.6MQ1 2022: $429.6MQ2 2022: $1.06BQ3 2022: $1.21BQ4 2022: $1.30BQ1 2023: $938.2MQ2 2023: $941.0MQ3 2023: $951.5MQ4 2023: $1.12BQ1 2024: $1.21BQ2 2024: $1.03BQ3 2024: $1.28BQ4 2024: $1.19BQ1 2025: $747.2MQ2 2025: $562.2MQ3 2025: $603.9MQ4 2025: $758.9MQ1 2026: $1.85BQ2 2026: $3.55K
Institutions holding DAWN and their total value by quarter
QuarterHoldersValue
Q2 20261$3.55K
Q1 2026208$1.85B
Q4 2025184$758.9M
Q3 2025173$603.9M
Q2 2025174$562.2M
Q1 2025184$747.2M
Q4 2024164$1.19B
Q3 2024166$1.28B
Q2 2024157$1.03B
Q1 2024148$1.21B
Q4 2023139$1.12B
Q3 2023130$951.5M
Q2 2023140$941.0M
Q1 2023126$938.2M
Q4 2022109$1.30B
Q3 202293$1.21B
Q2 202287$1.06B
Q1 202266$429.6M
Q4 202158$707.6M
Q3 202145$452.9M
Q2 202133$418.3M
Q1 20210$0

Institutions, Q2 2021

Shares, value and share of portfolio for each institution holding Day One Biopharmaceuticals, Inc.; share changes are against Q1 2021.

Institutions holding DAWN in Q2 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Ra Capital Management, L.P.4,965,588$113.1M1.81%+4,965,588New
FMR LLC2,312,450$52.7M0.00%+2,312,450New
Price T Rowe Associates Inc1,505,396$33.4M0.00%+1,505,396New
Viking Global Investors LPSuperinvestorViking Global Investors1,341,396$30.5M0.09%+1,341,396New
Janus Henderson Group PLC1,297,770$27.9M0.01%+1,297,770New
Boxer Capital, LLC1,189,943$27.1M0.96%+1,189,943New
BVF Inc918,975$20.9M0.78%+918,975New
Deerfield Management Company, L.P. (Series C)818,980$18.6M0.33%+818,980New
Perceptive Advisors LLC756,047$17.2M0.22%+756,047New
Vanguard Group Inc619,384$14.1M0.00%+619,384New
Franklin Resources Inc518,966$11.8M0.00%+518,966New
Driehaus Capital Management LLC434,423$9.89M0.13%+434,423New
Rock Springs Capital Management LP373,739$8.51M0.17%+373,739New
Samsara BioCapital, LLC202,500$4.61M0.61%+202,500New
HealthCor Management, L.P.103,717$2.36M0.10%+103,717New
Alyeska Investment Group, L.P.103,200$2.35M0.03%+103,200New
LMR Partners LLP50,000$1.14M0.02%+50,000New
Marshall Wace North America L.P.41,147$937.0K0.00%+41,147New
Logos Global Management LP37,069$844.0K0.07%+37,069New
Geode Capital Management, LLC34,935$795.0K0.00%+34,935New
Squarepoint Ops LLC18,927$431.0K0.00%+18,927New
TD Asset Management Inc16,856$400.0K0.00%+16,856New
Northern Trust Corp12,718$290.0K0.00%+12,718New
Virtu Financial LLC12,497$285.0K0.03%+12,497New
Goldman Sachs Group Inc11,594$264.0K0.00%+11,594New
ExodusPoint Capital Management, LP9,372$213.0K0.00%+9,372New
Maven Securities LTD9,000$210.0K0.02%+9,000New
BlackRock Inc.4,372$99.0K0.00%+4,372New
Morgan Stanley2,374$54.0K0.00%+2,374New
Capital Analysts, LLC750$17.0K0.00%+750New
Bank of America Corp700$16.0K0.00%+700New
JPMorgan Chase & Co54$1.00K0.00%+54New
Tower Research Capital LLC (TRC)10$00.00%+10New