13F Insight
DOSSIER · 13F Holders · Q1 2026CyclicalNet sold
ETON

ETON PHARMACEUTICALS INC

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

CUSIP 29772L108·120 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 7.2%
vs prior quarter
13F value held
$326M
74.0% inst. owned
of float
Holders
120
+1 QoQ
filers reporting
Activity
+45 / −39
+933 added · −737 reduced
this quarter
Concentration
16.44%
EcoR1 Capital, LLC #1
top holder share
AI Holders Summary · Q1 2026

120 institutions reported ETON in Q1 2026. EcoR1 Capital, LLC leads at 16.4% of the visible book. +1 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
EcoR1 Capital, LLC
CIK 0001587114
$54M2.2M2.27%Q1 202602
Opaleye Management Inc.
CIK 0001595855
$48M2.9M6.38%Q4 202503
BlackRock, Inc.
CIK 0002012383
$42M1.7M0.00%Q1 202604
Nantahala Capital Management, LLC
CIK 0001472322
$29M1.2M1.07%Q1 202605
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$25M994K0.00%Q1 202606
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$14M578K0.00%Q1 202607
STATE STREET CORP
CIK 0000093751
$13M530K0.00%Q1 202608
National Philanthropic Trust
CIK 0001785342
$12M492K0.13%Q1 202609
MORGAN STANLEY
CIK 0000895421
$12M478K0.00%Q1 202610
Westside Investment Management, Inc.
CIK 0001538383
$12M468K1.77%Q1 202611
OBERWEIS ASSET MANAGEMENT INC/
CIK 0000937886
$11M439K0.32%Q1 202612
Pillsbury Lake Capital LLC
CIK 0002111915
$9M365K4.07%Q1 202613
CANNELL CAPITAL LLC
CIK 0001058854
$8M342K5.18%Q1 202614
BNP PARIBAS FINANCIAL MARKETS
CIK 0001166588
$7M302K0.00%Q1 202615
NORTHERN TRUST CORP
CIK 0000073124· Index
$6M238K0.00%Q1 202616
GOLDMAN SACHS GROUP INC
CIK 0000886982
$5M217K0.00%Q1 202617
PRELUDE CAPITAL MANAGEMENT, LLC
CIK 0001387508
$5M189K0.36%Q1 202618
Aristides Capital LLC
CIK 0001595521
$5M186K0.99%Q1 202619
Panoramic Capital, LLC
CIK 0001950490
$5M185K3.21%Q1 202620
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$4M180K0.00%Q1 2026
Page 1 of 6
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