AI Holders Summary · Q2 2026

71 institutions reported SLN in Q2 2026. Siren, L.L.C. leads at 17.7% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(1 on this page)

#HolderValueShares% port.Quarter

Siren, L.L.C.

CIK 0002005245

$36M3.3M0.74%Q2 2026 02

TCG Crossover Management, LLC

CIK 0001839948

$33M3.0M0.80%Q2 2026 03

Nantahala Capital Management, LLC

CIK 0001472322

$30M2.7M0.49%Q2 2026 04

CITADEL ADVISORS LLC

CIK 0001423053

$15M1.3M0.00%Q2 2026 05

TFG Asset Management GP Ltd

CIK 0001515070

$12M1.1M1.84%Q2 2026 06

Redmile Group, LLC

CIK 0001425738

$11M2.2M0.76%Q1 2026 07

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$10M909K0.00%Q2 2026 08

Soleus Capital Management, L.P.

CIK 0001802630

$7M630K0.24%Q2 2026 09

BALYASNY ASSET MANAGEMENT L.P.

CIK 0001218710

$7M611K0.01%Q2 2026 10

Nextech Invest, Ltd.

CIK 0001595430

$6M952K0.56%Q4 2025 11

5AM Venture Management, LLC

CIK 0001799883

$5M476K1.82%Q2 2026 12

Caption Management, LLC

CIK 0001706766

$5M460K0.02%Q2 2026 13

GREAT POINT PARTNERS LLC

CIK 0001281446

$5M808K1.59%Q4 2025 14

MORGAN STANLEY

CIK 0000895421

$4M403K0.00%Q2 2026 15

AMERIPRISE FINANCIAL INC

CIK 0000820027

$4M370K0.00%Q2 2026 16

ADAR1 Capital Management, LLC

CIK 0001940272

$4M338K0.17%Q2 2026 17

SummitTX Capital, L.P.

CIK 0002052310

$4M327K0.09%Q2 2026 18

Schonfeld Strategic Advisors LLC

CIK 0001665241

$3M269K0.01%Q2 2026 19

UBS Group AG

CIK 0001610520

$3M243K0.00%Q2 2026 20

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$3M234K0.00%Q2 2026

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