DOSSIER · 13F Holders · Q1 2026Healthcare · Pharmaceutical Preparations
DAWN

DAY ONE BIOPHARMACEUTICALS I

198 institutions still hold DAY ONE BIOPHARMACEUTICALS I as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 23954D109·Pharmaceutical Preparations·198 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$1.2B
visible holders
Holders
198
filers reporting
Concentration
13.04%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

198 institutions reported DAWN in Q1 2026. BlackRock, Inc. leads at 13.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$151M7.0M0.00%Q1 2026
02
GLAZER CAPITAL, LLC
CIK 0001076809
$100M4.7M2.13%Q1 2026
03
FIL Ltd
CIK 0000318989
$89M4.1M0.07%Q1 2026
04
Kryger Capital LLC
CIK 0002123957
$84M3.9M5.91%Q1 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$72M3.4M0.00%Q1 2026
06
JPMORGAN CHASE & CO
CIK 0000019617
$67M3.1M0.00%Q1 2026
07
STATE STREET CORP
CIK 0000093751
$62M2.9M0.00%Q1 2026
08
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$56M2.6M0.07%Q1 2026
09
UBS Group AG
CIK 0001610520
$49M2.3M0.01%Q1 2026
10
Vanguard Portfolio Management
CIK 0002100121· Index
$45M2.1M0.00%Q1 2026
11
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$42M2.0M0.00%Q1 2026
12
Qube Research & Technologies Ltd
CIK 0001729829
$42M2.0M0.05%Q1 2026
13
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$41M1.9M0.02%Q1 2026
14
BANK OF AMERICA CORP /DE/
CIK 0000070858
$41M1.9M0.00%Q1 2026
15
O'Connor Alternative Investments LLC
CIK 0002081629
$40M1.9M3.43%Q1 2026
16
Nuveen, LLC
CIK 0001871926
$39M1.8M0.01%Q1 2026
17
PERCEPTIVE ADVISORS LLC
CIK 0001224962
$38M1.8M0.74%Q1 2026
18
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 0001009258
$35M3.7M0.44%Q4 2025
19
ODDO BHF ASSET MANAGEMENT SAS
CIK 0001686970
$33M1.6M1.31%Q1 2026
20
SOROS FUND MANAGEMENT LLC
CIK 0001029160
$33M1.5M0.36%Q1 2026
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Insiders at DAY ONE BIOPHARMACEUTICALS I
Bender JeremyMerendino LaurenJosey John A.Dubow AdamVasconcelles Michael