AI Holders Summary · Q2 2026

72 institutions reported SRZN in Q2 2026. TCG Crossover Management, LLC leads at 16.5% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(2 on this page)

#HolderValueShares% port.Quarter

TCG Crossover Management, LLC

CIK 0001839948

$38M1.5M0.92%Q2 2026 02

Boxer Capital Management, LLC

CIK 0002018299

$27M1.1M2.03%Q2 2026 03

Kalehua Capital Management LLC

CIK 0002106181

$20M770K6.38%Q2 2026 04

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$18M683K0.01%Q2 2026 05

VR Adviser, LLC

CIK 0001615982

$14M633K0.71%Q4 2025 06

STEMPOINT CAPITAL LP

CIK 0001952142

$14M603K2.37%Q2 2026 07

BRAIDWELL LP

CIK 0001920938

$12M396K0.38%Q1 2026 08

Spruce Street Capital LP

CIK 0002050194

$11M432K2.20%Q2 2026 09

BlackRock, Inc.

CIK 0002012383

$10M395K0.00%Q2 2026 10

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$10M393K0.00%Q2 2026 11

Vestal Point Capital, LP

CIK 0001974915

$10M339K0.28%Q1 2026 12

5AM Venture Management, LLC

CIK 0001799883

$7M271K2.44%Q2 2026 13

Vivo Capital, LLC

CIK 0001674712

$7M260K0.62%Q2 2026 14

PERCEPTIVE ADVISORS LLC

CIK 0001224962

$7M229K0.13%Q1 2026 15

BALYASNY ASSET MANAGEMENT L.P.

CIK 0001218710

$5M205K0.01%Q2 2026 16

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$5M202K0.00%Q2 2026 17

Ikarian Capital, LLC

CIK 0001778253

$5M173K0.41%Q1 2026 18

ACUTA CAPITAL PARTNERS, LLC

CIK 0001582844

$4M173K3.14%Q2 2026 19

REGENTS OF THE UNIVERSITY OF CALIFORNIA

CIK 0000315054

$3M133K0.08%Q2 2026 20

STATE STREET CORP

CIK 0000093751

$3M133K0.00%Q2 2026

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