AI Holders Summary · Q1 2026

127 institutions reported ETON in Q1 2026. EcoR1 Capital, LLC leads at 16.2% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(3 on this page)

#HolderValueShares% port.Quarter

EcoR1 Capital, LLC

CIK 0001587114

$54M2.2M2.27%Q1 2026 02

Opaleye Management Inc.

CIK 0001595855

$48M2.9M6.38%Q4 2025 03

BlackRock, Inc.

CIK 0002012383

$42M1.7M0.00%Q1 2026 04

Nantahala Capital Management, LLC

CIK 0001472322

$29M1.2M1.07%Q1 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$25M994K0.00%Q1 2026 06

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$14M578K0.00%Q1 2026 07

STATE STREET CORP

CIK 0000093751

$13M530K0.00%Q1 2026 08

National Philanthropic Trust

CIK 0001785342

$12M492K0.13%Q1 2026 09

MORGAN STANLEY

CIK 0000895421

$12M478K0.00%Q1 2026 10

Westside Investment Management, Inc.

CIK 0001538383

$12M468K1.77%Q1 2026 11

OBERWEIS ASSET MANAGEMENT INC/

CIK 0000937886

$11M439K0.32%Q1 2026 12

THOMPSON SIEGEL & WALMSLEY LLC

CIK 0001008322

$10M406K0.18%Q1 2026 13

Pillsbury Lake Capital LLC

CIK 0002111915

$9M365K4.07%Q1 2026 14

CANNELL CAPITAL LLC

CIK 0001058854

$8M342K5.18%Q1 2026 15

BNP PARIBAS FINANCIAL MARKETS

CIK 0001166588

$7M302K0.00%Q1 2026 16

NORTHERN TRUST CORP

CIK 0000073124· Index

$6M238K0.00%Q1 2026 17

GOLDMAN SACHS GROUP INC

CIK 0000886982

$5M217K0.00%Q1 2026 18

PRELUDE CAPITAL MANAGEMENT, LLC

CIK 0001387508

$5M189K0.36%Q1 2026 19

Aristides Capital LLC

CIK 0001595521

$5M186K0.99%Q1 2026 20

Panoramic Capital, LLC

CIK 0001950490

$5M185K3.21%Q1 2026

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