AI Holders Summary · Q1 2026

61 institutions reported SRZN in Q1 2026. TCG Crossover Management, LLC leads at 17.9% 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

TCG Crossover Management, LLC

CIK 0001839948

$43M1.5M1.23%Q1 2026 02

Kalehua Capital Management LLC

CIK 0002106181

$22M770K8.63%Q1 2026 03

Boxer Capital Management, LLC

CIK 0002018299

$22M766K2.93%Q1 2026 04

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$21M731K0.01%Q1 2026 05

STEMPOINT CAPITAL LP

CIK 0001952142

$19M722K1.85%Q1 2026 06

VR Adviser, LLC

CIK 0001615982

$14M633K0.71%Q4 2025 07

Spruce Street Capital LP

CIK 0002050194

$13M432K3.03%Q1 2026 08

BRAIDWELL LP

CIK 0001920938

$12M396K0.38%Q1 2026 09

Vestal Point Capital, LP

CIK 0001974915

$10M339K0.28%Q1 2026 10

5AM Venture Management, LLC

CIK 0001799883

$9M388K2.75%Q4 2025 11

Vivo Capital, LLC

CIK 0001674712

$8M260K0.63%Q1 2026 12

PERCEPTIVE ADVISORS LLC

CIK 0001224962

$7M229K0.13%Q1 2026 13

Woodline Partners LP

CIK 0001784547

$7M228K0.03%Q1 2026 14

BALYASNY ASSET MANAGEMENT L.P.

CIK 0001218710

$6M204K0.01%Q1 2026 15

Ikarian Capital, LLC

CIK 0001778253

$5M173K0.41%Q1 2026 16

ACUTA CAPITAL PARTNERS, LLC

CIK 0001582844

$5M173K3.55%Q1 2026 17

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$5M169K0.00%Q1 2026 18

AMERIPRISE FINANCIAL INC

CIK 0000820027

$5M160K0.00%Q1 2026 19

SILVERARC CAPITAL MANAGEMENT, LLC

CIK 0001816307

$4M144K0.43%Q1 2026 20

REGENTS OF THE UNIVERSITY OF CALIFORNIA

CIK 0000315054

$4M133K0.13%Q1 2026

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