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 2022 vs. Q1 2022

How the institutions holding Day One Biopharmaceuticals, Inc. changed between Q1 2022 and Q2 2022.

All holders in Q2 2022 All holders in Q1 2022

13F holders of DAWN: Q1 2022 compared with Q2 2022
Measure	Q1 2022	Of which not filed for Q2 2022	Q2 2022	Change
Holders	66	2	87	+23
Shares	43.3M	18.1K	59.4M	+16.1M (+37.2%)
Value	$429.6M	$179.0K	$1.06B	+$632.7M (+147.4%)

2 institutions that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so the changes leave them out.

New holders (34)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q2 2022 but not at the end of Q1 2022.

Institutions new to DAWN in Q2 2022
Institution	Shares	Value	% of portfolio
Polar Capital Holdings Plc	971,696	$17.4M	0.13%
Commodore Capital LP	739,661	$13.2M	2.80%
Woodline Partners LP	150,176	$2.69M	0.04%
D. E. Shaw & Co., Inc.	138,318	$2.48M	0.00%
Simplex Trading, LLC	132,926	$2.38M	0.08%
Renaissance Technologies LLC	116,630	$2.09M	0.00%
Parkman Healthcare Partners LLC	114,750	$2.05M	0.76%
Macquarie Group Ltd	110,000	$1.97M	0.00%
Silverarc Capital Management, LLC	105,476	$1.89M	0.88%
Invesco Ltd.	97,024	$1.74M	0.00%
Maven Securities LTD	80,000	$1.43M	0.25%
Cubist Systematic Strategies, LLC	61,237	$1.10M	0.01%
Ergoteles LLC	56,300	$1.01M	0.03%
Allianz Asset Management GmbH	51,325	$919.0K	0.00%
Alliancebernstein L.P.	42,400	$759.0K	0.00%
Schonfeld Strategic Advisors LLC	40,300	$722.0K	0.01%
HRT Financial LP	35,426	$634.0K	0.01%
Monashee Investment Management LLC	30,000	$537.0K	0.20%
Occudo Quantitative Strategies LP	23,619	$423.0K	0.03%
ExodusPoint Capital Management, LP	23,003	$412.0K	0.01%
State Board of Administration of Florida Retirement System	13,760	$246.0K	0.00%
SG Americas Securities, LLC	9,446	$169.0K	0.00%
UBS Group AG	3,851	$69.0K	0.00%
Quantbot Technologies LP	2,900	$51.0K	0.00%
TCI Wealth Advisors, Inc.	1,974	$35.0K	0.01%
FourThought Financial, LLC	1,850	$33.0K	0.00%
ACG Wealth	1,772	$32.0K	0.01%
Quintet Private Bank (Europe) S.A.	2,302	$27.5K	0.00%
Washington Trust Advisors, Inc.	163	$3.00K	0.00%
Crewe Advisors LLC	80	$1.00K	0.00%
Credit Suisse AG	23	$0	0.00%
CWM, LLC	3	$0	0.00%
Ellevest, Inc.	10	$0	0.00%
Advisor Group Holdings, Inc.	1	$0	0.00%

Sold out (11)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q1 2022 and filed for Q2 2022 without it.

Institutions that sold out of DAWN in Q2 2022
Institution	Shares, Q1 2022	Value, Q1 2022
Janus Henderson Group PLC	902,020	$8.95M
BVF Inc	809,282	$8.03M
Two Sigma Investments, LP	60,190	$597.0K
Walleye Capital LLC	26,148	$259.0K
State of Tennessee, Treasury Department	25,460	$253.0K
Two Sigma Advisers, LP	19,900	$197.0K
Susquehanna International Group, LLP	18,604	$185.0K
Nan Fung Group Holdings Ltd	11,445	$114.0K
ProShare Advisors LLC	10,675	$106.0K
The PNC Financial Services Group, Inc.	175	$2.00K
Private Capital Group, LLC	142	$1.00K

Not filed for Q2 2022 yet (2)

Institutions that held Day One Biopharmaceuticals, Inc. at the end of Q1 2022 and haven't filed a 13F for Q2 2022. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding DAWN in Q1 2022 that haven't filed for Q2 2022
Institution	Shares, Q1 2022	Value, Q1 2022
Parametric Portfolio Associates LLC	15,016	$149.0K
Amalgamated Financial Corp.	3,034	$30.0K