13F Insight
DOSSIER · 13F Holders · Q1 2026BellwetherCompounder
STRO

SUTRO BIOPHARMA INC

71 institutions still hold SUTRO BIOPHARMA INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 869367201·71 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 8.2%
vs prior quarter
13F value held
$275M
78.0% inst. owned
of float
Holders
71
+86 QoQ
filers reporting
Activity
+52 / −44
+863 added · −797 reduced
this quarter
Concentration
9.70%
Affinity Asset Advisors, LLC #1
top holder share
AI Holders Summary · Q1 2026

71 institutions reported STRO in Q1 2026. Affinity Asset Advisors, LLC leads at 9.7% of the visible book. +86 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
Affinity Asset Advisors, LLC
CIK 0001773195
$27M1.1M1.38%Q1 202602
Samsara BioCapital, LLC
CIK 0001744967
$26M1.1M2.57%Q1 202603
Kynam Capital Management, LP
CIK 0001907884
$22M873K1.34%Q1 202604
ORBIMED ADVISORS LLC
CIK 0001055951
$20M801K0.40%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$18M720K0.00%Q1 202606
EVENTIDE ASSET MANAGEMENT, LLC
CIK 0001442891
$18M715K0.29%Q1 202607
PERCEPTIVE ADVISORS LLC
CIK 0001224962
$18M715K0.35%Q1 202608
RA CAPITAL MANAGEMENT, L.P.
CIK 0001346824
$18M715K0.19%Q1 202609
Point72 Asset Management, L.P.
CIK 0001603466
$17M692K0.02%Q1 202610
ADAR1 Capital Management, LLC
CIK 0001940272
$13M524K0.77%Q1 202611
Velan Capital Investment Management LP
CIK 0001848809
$13M512K7.99%Q1 202612
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$12M466K0.02%Q1 202613
Woodline Partners LP
CIK 0001784547
$11M457K0.04%Q1 202614
UBS Group AG
CIK 0001610520
$10M393K0.00%Q1 202615
ACUTA CAPITAL PARTNERS, LLC
CIK 0001582844
$7M269K4.73%Q1 202616
BlackRock, Inc.
CIK 0002012383
$6M233K0.00%Q1 202617
KVP Capital Advisors, LP
CIK 0001858198
$6M227K4.22%Q1 202618
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$5M210K0.00%Q1 202619
ADAGE CAPITAL PARTNERS GP, L.L.C.
CIK 0001165408
$5M200K0.01%Q1 202620
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$4M171K0.00%Q1 2026
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