Day One Biopharmaceuticals, Inc.

DAWNDelisted Apr 23, 2026

Industry: Pharmaceutical Preparations
SEC CIK: 0001845337

SEC filings (opens in a new tab)

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.

Q1 2025 vs. Q4 2024

How the institutions holding Day One Biopharmaceuticals, Inc. changed between Q4 2024 and Q1 2025.

All holders in Q1 2025 All holders in Q4 2024

13F holders of DAWN: Q4 2024 compared with Q1 2025
Measure	Q4 2024	Of which not filed for Q1 2025	Q1 2025	Change
Holders	164	1	184	+21
Shares	93.7M	141.3K	94.2M	+610.9K (+0.7%)
Value	$1.19B	$1.79M	$747.1M	−$438.8M (−37.0%)

1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (42)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q1 2025 but not at the end of Q4 2024.

Institutions new to DAWN in Q1 2025
Institution	Shares	Value	% of portfolio
Algert Global LLC	371,380	$2.95M	0.07%
Susquehanna Fundamental Investments, LLC	322,875	$2.56M	0.04%
Nuveen, LLC	139,658	$1.11M	0.00%
Schonfeld Strategic Advisors LLC	65,525	$519.6K	0.00%
Los Angeles Capital Management LLC	54,922	$435.5K	0.00%
Tudor Investment Corp Et Al	50,794	$402.8K	0.00%
Dynamic Technology Lab Private Ltd	48,457	$384.0K	0.06%
Ieq Capital, LLC	37,012	$293.5K	0.00%
Kodai Capital Management LP	34,685	$275.1K	0.01%
HRT Financial LP	31,487	$249.0K	0.00%
Jane Street Group, LLC	30,910	$245.1K	0.00%
Virtus Investment Advisers, Inc.	28,030	$222.3K	0.06%
Allianz Asset Management GmbH	25,000	$198.3K	0.00%
Axq Capital, LP	19,030	$150.9K	0.06%
Caption Management, LLC	18,534	$147.0K	0.01%
Bayesian Capital Management, LP	18,000	$142.7K	0.02%
Engineers Gate Manager LP	17,291	$137.1K	0.00%
Corton Capital Inc.	16,447	$130.4K	0.43%
Cerity Partners LLC	14,999	$118.9K	0.00%
American Century Companies Inc	14,415	$114.3K	0.00%
Twinbeech Capital LP	12,998	$103.1K	0.00%
CIBC World Markets Corp	12,150	$96.3K	0.00%
Virginia Retirement Systems Et Al	12,100	$96.0K	0.00%
Magnetar Financial LLC	11,303	$89.6K	0.00%
Wealth Enhancement Advisory Services, LLC	11,154	$88.5K	0.00%
Pallas Capital Advisors LLC	11,005	$87.3K	0.00%
Quantbot Technologies LP	10,295	$81.6K	0.00%
Group One Trading, L.P.	4,444	$35.2K	0.00%
Antipodes Partners Ltd	2,043	$16.2K	0.00%
Simplex Trading, LLC	1,665	$13.0K	0.00%
Jones Financial Companies LLLP	363	$2.93K	0.00%
Abound Financial, LLC	327	$2.59K	0.00%
Steward Partners Investment Advisory, LLC	300	$2.38K	0.00%
Signaturefd, LLC	246	$1.95K	0.00%
Coldstream Capital Management Inc	205	$1.63K	0.00%
Lindbrook Capital, LLC	142	$1.13K	0.00%
True Wealth Design, LLC	80	$635	0.00%
Larson Financial Group LLC	76	$603	0.00%
Ronald Blue Trust, Inc.	44	$349	0.00%
Caitong International Asset Management Co., Ltd	43	$341	0.00%
Parkside Financial Bank & Trust	40	$318	0.00%
Smartleaf Asset Management LLC	24	$193	0.00%

Sold out (21)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q4 2024 and filed for Q1 2025 without it.

Institutions that sold out of DAWN in Q1 2025
Institution	Shares, Q4 2024	Value, Q4 2024
Fairmount Funds Management LLC	3,103,448	$39.3M
TimesSquare Capital Management, LLC	1,710,926	$21.7M
First Turn Management, LLC	947,878	$12.0M
Adage Capital Partners GP, L.L.C.	800,000	$10.1M
Wellington Management Group LLP	731,303	$9.27M
Frazier Life Sciences Management, L.P.	689,655	$8.74M
Essex Investment Management Co LLC	207,574	$2.63M
Samsara BioCapital, LLC	147,319	$1.87M
Jackson Creek Investment Advisors LLC	103,592	$1.31M
Legato Capital Management LLC	62,027	$785.9K
Skandinaviska Enskilda Banken AB (publ)	41,771	$525.5K
Graham Capital Management, L.P.	27,950	$354.1K
Virtus ETF Advisers LLC	27,296	$345.8K
Sherbrooke Park Advisers LLC	14,865	$188.3K
Vontobel Holding Ltd.	10,944	$138.7K
TD Asset Management Inc	10,796	$136.8K
R Squared Ltd	2,450	$31.0K
Continuum Advisory, LLC	1,058	$13.4K
Red Tortoise LLC	216	$2.74K
Spire Wealth Management	40	$507
Clearstead Advisors, LLC	5	$64

Not filed for Q1 2025 yet (1)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q4 2024 and haven't filed a 13F for Q1 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding DAWN in Q4 2024 that haven't filed for Q1 2025
Institution	Shares, Q4 2024	Value, Q4 2024
Nuveen Asset Management, LLC	141,298	$1.79M