AI Holders Summary · Q2 2026

167 institutions reported VSTM in Q2 2026. BlackRock, Inc. leads at 11.6% 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

BlackRock, Inc.

CIK 0002012383

$35M9.2M0.00%Q2 2026 02

Nantahala Capital Management, LLC

CIK 0001472322

$27M7.2M0.46%Q2 2026 03

ARMISTICE CAPITAL, LLC

CIK 0001601086

$27M7.0M0.33%Q2 2026 04

RTW INVESTMENTS, LP

CIK 0001493215

$25M6.6M0.22%Q2 2026 05

Foresite Capital Management VI LLC

CIK 0002013341

$24M3.1M7.32%Q4 2025 06

Deep Track Capital, LP

CIK 0001856083

$22M5.7M0.32%Q2 2026 07

STATE STREET CORP

CIK 0000093751

$20M5.1M0.00%Q2 2026 08

Rosalind Advisors, Inc.

CIK 0001622627

$15M4.0M5.66%Q2 2026 09

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$15M3.9M0.00%Q2 2026 10

Stonepine Capital Management, LLC

CIK 0001440771

$13M3.3M7.22%Q2 2026 11

Vanguard Portfolio Management

CIK 0002100121· Index

$12M3.3M0.00%Q2 2026 12

GOLDMAN SACHS GROUP INC

CIK 0000886982

$10M2.7M0.00%Q2 2026 13

Alyeska Investment Group, L.P.

CIK 0001453072

$9M2.3M0.02%Q2 2026 14

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$8M2.2M0.00%Q2 2026 15

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$8M2.1M0.00%Q2 2026 16

AIGH Capital Management LLC

CIK 0001835943

$7M1.9M0.46%Q2 2026 17

Opaleye Management Inc.

CIK 0001595855

$7M1.8M0.62%Q2 2026 18

BALYASNY ASSET MANAGEMENT L.P.

CIK 0001218710

$6M1.7M0.01%Q2 2026 19

Qube Research & Technologies Ltd

CIK 0001729829

$6M1.6M0.01%Q2 2026 20

ACORN CAPITAL ADVISORS, LLC

CIK 0002054410

$6M1.5M1.53%Q2 2026

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