Day One Biopharmaceuticals, Inc. - COMMON STOCK (DAWN) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2021 to Q4 2025

Type / Class
Equity / COMMON STOCK
Symbol
DAWN on Nasdaq
Shares outstanding
102,089,423
Price per share
$10.59
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
51,501,463
Total reported value
$479,689,455
% of total 13F portfolios
0%
Share change
-1,194,825
Value change
+$2,235,185
Number of holders
117
Price from insider filings
$10.59
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Day One Biopharmaceuticals, Inc. - COMMON STOCK (DAWN) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 5.8% +22% $38,061,315 +$6,751,002 5,849,917 +22% BlackRock, Inc. 30 Jun 2025
FMR LLC 5.6% -43% $53,284,798 -$40,829,513 5,717,008 -43% FMR LLC 31 Dec 2025

As of 31 Dec 2025, 117 institutional investors reported holding 51,501,463 shares of Day One Biopharmaceuticals, Inc. - COMMON STOCK (DAWN). This represents 50% of the company’s total 102,089,423 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Day One Biopharmaceuticals, Inc. - COMMON STOCK (DAWN) together control 46% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 8.7% 8,837,574 -1.8% 0% $82,366,188
Atlas Venture Life Science Advisors, LLC 6.3% 6,412,560 -0.28% 6.9% $59,765,059
VANGUARD GROUP INC 6.2% 6,282,376 +1.6% 0% $58,551,745
STATE STREET CORP 4.2% 4,289,566 +32% 0% $39,978,755
Pictet Asset Management Holding SA 2.9% 2,990,801 +26% 0.03% $27,874,265
AIGH Capital Management LLC 2% 1,992,021 +31% 5.5% $18,565,635
GEODE CAPITAL MANAGEMENT, LLC 1.8% 1,877,838 +6.6% 0% $17,504,632
Hudson Bay Capital Management LP 1.7% 1,700,000 +29% 0.09% $15,844,000
MORGAN STANLEY 1.5% 1,550,274 +19% 0% $14,448,557
GOLDMAN SACHS GROUP INC 1.5% 1,506,234 +9.8% 0% $14,038,100
RENAISSANCE TECHNOLOGIES LLC 1.3% 1,305,084 +44% 0.02% $12,163,383
Jefferies Financial Group Inc. 1.1% 1,121,502 0.09% $10,452,399
DIMENSIONAL FUND ADVISORS LP 1% 1,037,312 -15% 0% $9,666,870
JANE STREET GROUP, LLC 0.83% 845,154 +203% 0.01% $7,876,835
JACOBS LEVY EQUITY MANAGEMENT, INC 0.71% 729,281 0.03% $6,796,899
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.62% 633,694 +3.9% 0% $5,906,028
SCHRODER INVESTMENT MANAGEMENT GROUP 0.56% 569,624 +111% 0% $5,229,148
Pale Fire Capital SE 0.53% 544,063 +80% 0.65% $5,070,667
KENNEDY CAPITAL MANAGEMENT LLC 0.53% 542,848 +0.46% 0.11% $5,059,343
Nuveen, LLC 0.51% 522,455 +247% 0% $4,869,281
BNP PARIBAS FINANCIAL MARKETS 0.44% 453,311 0% 0% $4,224,859
HRT FINANCIAL LP 0.44% 450,938 +40% 0.01% $4,202,000
SG Americas Securities, LLC 0.34% 350,092 +1229% 0% $3,263,000
Hennion & Walsh Asset Management, Inc. 0.31% 313,455 +230% 0.1% $2,921,401
BARCLAYS PLC 0.29% 292,325 -16% 0% $2,724,467

Institutional Holders of Day One Biopharmaceuticals, Inc. - COMMON STOCK (DAWN) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 51,501,463 $479,689,455 +$2,235,185 $9.32 117
2025 Q3 85,449,652 $602,397,711 -$3,593,241 $7.05 169
2025 Q2 86,186,499 $560,206,343 -$67,566,968 $6.50 173
2025 Q1 94,058,917 $745,890,533 -$40,487,714 $7.93 183
2024 Q4 93,739,417 $1,187,690,667 -$5,879,821 $12.67 163
2024 Q3 92,050,053 $1,283,687,781 +$239,491,695 $13.93 165
2024 Q2 74,705,046 $1,029,464,955 +$17,373,333 $13.78 155
2024 Q1 72,782,347 $1,202,300,406 -$58,498,635 $16.52 147
2023 Q4 76,570,666 $1,117,957,204 -$50,224,829 $14.60 138
2023 Q3 77,547,732 $951,517,363 -$22,223,998 $12.27 127
2023 Q2 78,803,713 $941,011,552 +$208,122,003 $11.94 136
2023 Q1 61,209,087 $818,137,120 -$10,189,943 $13.37 122
2022 Q4 59,797,551 $1,286,831,022 -$37,719,296 $21.52 105
2022 Q3 60,343,678 $1,208,648,617 +$24,007,409 $20.03 87
2022 Q2 59,307,013 $1,061,573,186 +$302,547,160 $17.90 80
2022 Q1 43,302,427 $429,553,897 +$13,144,675 $9.92 66
2021 Q4 41,477,196 $698,277,000 +$74,959,681 $16.85 57
2021 Q3 19,043,827 $450,147,328 +$32,649,130 $23.73 43
2021 Q2 17,724,839 $401,085,000 +$401,084,962 $22.77 32