Day One Biopharmaceuticals, Inc. (DAWN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

103,821,053Shares Outstanding

1,292,615Shares held by institutions

$15,356,266Value of institutional holdings

77.65%Institutional ownership %

7.05%Shares Changed QoQ

175No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

A total of 175 institutions have reported a stake in Day One Biopharmaceuticals, Inc. (NASDAQ:DAWN) as of December 2025, according to recent 13F filings with the SEC.

Day One Biopharmaceuticals saw its institutional ownership percentage fell to 77.7% in December 2025 from 82.3% in September 2025.
The company experienced a 7.05% quarterly change in institutional shares held, alongside an increase of 7.36% in total owners annually.
The latest 13F cycle for Day One Biopharmaceuticals reveals that of 175 total investors, 110 funds grew their exposure, whereas 43 reduced theirs and 22 made no changes.
This class of investors increased its holdings in Day One Biopharmaceuticals to 80.62Mn shares for the 13F-cycle ending December 2025, up by 5.31Mn shares quarter on quarter, and down 13.06Mn shares year over year.
BlackRock, Inc.'s holding of 8.84Mn shares as of December 31, 2025 makes it the primary institutional investor in Day One Biopharmaceuticals, owning 8.51% of the stock.
Among the most significant buyers of Day One Biopharmaceuticals during December 2025 were Vestal Point Capital, LP (2.52Mn), Jefferies Financial Group Inc. (1.12Mn), STATE STREET CORP (1.05Mn), JACOBS LEVY EQUITY MANAGEMENT, INC (729.28K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (708.81K).
Leading sellers of Day One Biopharmaceuticals stock in December 2025 included FMR LLC (4.38Mn), FRANKLIN RESOURCES INC (3.42Mn), DEERFIELD MANAGEMENT COMPANY, L.P. (982.28K), ALGERT GLOBAL LLC (781.75K), MAK CAPITAL ONE LLC (622.26K).
The top 10 institutional holders of Day One Biopharmaceuticals for the quarter ending December 2025 included BlackRock, Inc. (8.84Mn), Atlas Venture Life Science Advisors, LLC (6.41Mn), VANGUARD GROUP INC (6.28Mn), FMR LLC (5.72Mn), Vestal Point Capital, LP (5.20Mn), STATE STREET CORP (4.29Mn), DEERFIELD MANAGEMENT COMPANY, L.P. (3.72Mn), Pictet Asset Management Holding SA (2.99Mn), AIGH Capital Management LLC (1.99Mn), GEODE CAPITAL MANAGEMENT, LLC (1.88Mn).

175 Institutional Holders

1,292,615 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	8,837,574	-163,881	-1.82%	$82,366,188.00
Atlas Venture Life Science Advisors, LLC	31 Dec, 2025	6,412,560	-17,697	-0.28%	$59,765,059.00
VANGUARD GROUP INC	31 Dec, 2025	6,282,376	101,047	1.63%	$58,551,745.00
FMR LLC	31 Dec, 2025	5,717,008	-4,380,660	-43.38%	$53,282,512.00
Vestal Point Capital, LP	31 Dec, 2025	5,200,000	2,525,000	94.39%	$48,464,000.00
STATE STREET CORP	31 Dec, 2025	4,289,566	1,049,122	32.38%	$39,978,755.00
DEERFIELD MANAGEMENT COMPANY, L.P.	31 Dec, 2025	3,723,131	-982,282	-20.88%	$34,699,581.00
Pictet Asset Management Holding SA	31 Dec, 2025	2,990,801	617,668	26.03%	$27,874,265.00
AIGH Capital Management LLC	31 Dec, 2025	1,992,021	471,529	31.01%	$18,565,635.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,877,838	116,574	6.62%	$17,504,632.00
Hudson Bay Capital Management LP	31 Dec, 2025	1,700,000	380,000	28.79%	$15,844,000.00
MORGAN STANLEY	31 Dec, 2025	1,550,274	246,245	18.88%	$14,448,557.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	1,506,234	134,797	9.83%	$14,038,100.00
BALYASNY ASSET MANAGEMENT L.P.	31 Dec, 2025	1,489,924	105,877	7.65%	$13,886,092.00
Qube Research & Technologies Ltd	31 Dec, 2025	1,486,562	318,893	27.31%	$13,854,758.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,359,613	696,400	105.00%	$12,671,593.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	1,349,919	656,599	94.70%	$12,581,245.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	1,305,084	399,608	44.13%	$12,163,383.00
Jefferies Financial Group Inc.	31 Dec, 2025	1,121,502	1,121,502	0.00%	$10,452,399.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	1,083,818	-108,033	-9.06%	$10,101,185.00

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