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.

Q4 2023 vs. Q3 2023

How the institutions holding Day One Biopharmaceuticals, Inc. changed between Q3 2023 and Q4 2023.

All holders in Q4 2023 All holders in Q3 2023

13F holders of DAWN: Q3 2023 compared with Q4 2023
Measure	Q3 2023	Q4 2023	Change
Holders	130	139	+9
Shares	77.5M	76.6M	−977.1K (−1.3%)
Value	$951.5M	$1.12B	+$166.4M (+17.5%)

New holders (26)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q4 2023 but not at the end of Q3 2023.

Institutions new to DAWN in Q4 2023
Institution	Shares	Value	% of portfolio
First Turn Management, LLC	1,700,949	$24.8M	3.57%
Estuary Capital Management LP	882,897	$12.9M	7.80%
Superstring Capital Management LP	379,626	$5.54M	3.96%
Propel Bio Management, LLC	270,664	$3.95M	3.28%
Pier Capital, LLC	258,685	$3.78M	0.54%
Laurion Capital Management LP	164,983	$2.41M	0.09%
Hudson Bay Capital Management LP	80,000	$1.17M	0.01%
HRT Financial LP	73,887	$1.08M	0.01%
Jane Street Group, LLC	39,303	$573.8K	0.00%
Jupiter Asset Management Ltd	36,671	$535.4K	0.01%
Tudor Investment Corp Et Al	33,367	$487.2K	0.01%
Gsa Capital Partners LLP	30,378	$444.0K	0.04%
Handelsbanken Fonder AB	17,400	$254.0K	0.00%
Balyasny Asset Management LLC	15,605	$227.8K	0.00%
NEOS Investment Management LLC	15,507	$226.4K	0.02%
Cubist Systematic Strategies, LLC	14,395	$210.2K	0.00%
UBS Asset Management Americas Inc	14,300	$208.8K	0.00%
Commonwealth Equity Services, LLC	12,660	$185.0K	0.00%
Dynamic Technology Lab Private Ltd	10,651	$156.0K	0.02%
AQR Capital Management LLC	10,158	$148.3K	0.00%
BIT Capital GmbH	7,430	$108.5K	0.01%
Amundi	2,976	$43.1K	0.00%
Quest Partners LLC	1,980	$28.9K	0.01%
Spire Wealth Management	40	$557	0.00%
GAMMA Investing LLC	37	$557	0.00%
Farther Finance Advisors, LLC	3	$44	0.00%

Sold out (17)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q3 2023 and filed for Q4 2023 without it.

Institutions that sold out of DAWN in Q4 2023
Institution	Shares, Q3 2023	Value, Q3 2023
Canaan Partners XI LLC	2,491,561	$30.6M
Commodore Capital LP	739,661	$9.08M
Verition Fund Management LLC	548,757	$6.73M
Artal Group S.A.	500,000	$6.13M
Walleye Capital LLC	277,206	$3.40M
Trexquant Investment LP	97,868	$1.20M
AlphaCentric Advisors LLC	95,000	$1.17M
Millennium Management LLC	35,786	$439.1K
Apis Capital Advisors, LLC	29,000	$355.8K
Walleye Trading LLC	14,966	$183.6K
Capstone Investment Advisors, LLC	11,088	$136.1K
Group One Trading, L.P.	2,958	$36.3K
Crewe Advisors LLC	30	$369
Advisor Group Holdings, Inc.	24	$294
Northwestern Mutual Wealth Management Co	15	$184
CWM, LLC	3	$0
Avion Wealth	37	$0