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.

Q2 2023 vs. Q1 2023

How the institutions holding Day One Biopharmaceuticals, Inc. changed between Q1 2023 and Q2 2023.

All holders in Q2 2023 All holders in Q1 2023

13F holders of DAWN: Q1 2023 compared with Q2 2023
Measure	Q1 2023	Q2 2023	Change
Holders	126	140	+14
Shares	61.2M	78.8M	+17.6M (+28.7%)
Value	$818.1M	$941.0M	+$122.9M (+15.0%)

New holders (39)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q2 2023 but not at the end of Q1 2023.

Institutions new to DAWN in Q2 2023
Institution	Shares	Value	% of portfolio
Deerfield Management Company, L.P. (Series C)	1,269,992	$15.2M	0.32%
PFM Health Sciences, LP	1,147,140	$13.7M	0.55%
Baker Bros. Advisors LP	1,000,000	$11.9M	0.07%
TimesSquare Capital Management, LLC	805,700	$9.62M	0.14%
Marshall Wace, LLP	789,632	$9.43M	0.02%
Logos Global Management LP	650,000	$7.76M	1.07%
Sphera Funds Management Ltd.	530,000	$6.33M	1.36%
DAFNA Capital Management LLC	507,100	$6.05M	1.66%
Artal Group S.A.	500,000	$5.97M	0.19%
Monashee Investment Management LLC	199,900	$2.39M	0.57%
ExodusPoint Capital Management, LP	187,185	$2.23M	0.03%
Point72 Asset Management, L.P.	131,000	$1.56M	0.01%
Wellington Management Group LLP	112,010	$1.34M	0.00%
Swiss National Bank	111,300	$1.33M	0.00%
AlphaCentric Advisors LLC	110,000	$1.31M	0.73%
Apis Capital Advisors, LLC	90,000	$1.07M	1.08%
CVI Holdings, LLC	80,000	$955.2K	1.01%
Credit Suisse AG	57,402	$685.4K	0.00%
State of Wisconsin Investment Board	46,196	$551.6K	0.00%
Bank of Montreal	37,895	$507.4K	0.00%
Davidson Kempner Capital Management LP	40,000	$477.2K	0.01%
Hennion & Walsh Asset Management, Inc.	28,389	$339.0K	0.02%
Vontobel Holding Ltd.	23,800	$284.2K	0.00%
Two Sigma Advisers, LP	16,400	$195.8K	0.00%
Invesco Ltd.	16,094	$192.2K	0.00%
Bayesian Capital Management, LP	15,834	$189.1K	0.02%
Teacher Retirement System of Texas	13,825	$165.0K	0.00%
Nebula Research & Development LLC	12,380	$147.8K	0.11%
Regency Capital Management Inc.	12,000	$143.3K	0.12%
Prelude Capital Management, LLC	11,900	$142.1K	0.01%
PFS Investments Inc.	11,505	$137.0K	0.00%
Arizona State Retirement System	11,368	$135.7K	0.00%
ProShare Advisors LLC	11,164	$133.3K	0.00%
Exchange Traded Concepts, LLC	10,413	$124.3K	0.00%
Sandia Investment Management LP	10,000	$119.4K	0.04%
Zurcher Kantonalbank (Zurich Cantonalbank)	9,255	$110.5K	0.00%
Belvedere Trading LLC	5,945	$71.0K	0.02%
CarsonAllaria Wealth Management, Ltd.	100	$1.19K	0.00%
Bellevue Asset Management, LLC	93	$1.11K	0.00%

Sold out (25)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q1 2023 and filed for Q2 2023 without it.

Institutions that sold out of DAWN in Q2 2023
Institution	Shares, Q1 2023	Value, Q1 2023
Lord, Abbett & Co. LLC	402,440	$5.38M
Cubist Systematic Strategies, LLC	172,408	$2.31M
Two Sigma Investments, LP	153,569	$2.05M
Great Point Partners LLC	141,526	$1.89M
Moody Aldrich Partners LLC	117,326	$1.57M
Qube Research & Technologies Ltd	104,327	$1.39M
Maven Securities LTD	100,000	$1.34M
Trexquant Investment LP	52,335	$699.7K
Gsa Capital Partners LLP	36,494	$488.0K
UBS Oconnor LLC	28,053	$375.1K
Axq Capital, LP	23,070	$308.4K
Ergoteles LLC	22,335	$298.6K
US Bancorp	22,265	$297.7K
Occudo Quantitative Strategies LP	20,947	$280.1K
Parkwood LLC	20,381	$272.0K
SEI Investments Co	17,342	$231.9K
Walleye Capital LLC	16,519	$220.9K
Point72 Middle East FZE	13,779	$184.2K
Virtu Financial LLC	10,941	$146.0K
Cutler Group LP	2,400	$32.0K
STRS Ohio	2,300	$30.0K
TCI Wealth Advisors, Inc.	1,974	$26.4K
Federated Hermes, Inc.	725	$9.69K
Spire Wealth Management	40	$535
Northwestern Mutual Wealth Management Co	13	$174