AI Holders Summary · Q2 2026

205 institutions reported STOK in Q2 2026. BlackRock, Inc. leads at 9.7% 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

$192M5.9M0.00%Q2 2026 02

RTW INVESTMENTS, LP

CIK 0001493215

$184M5.6M1.57%Q2 2026 03

FMR LLC

CIK 0000315066

$174M5.3M0.01%Q2 2026 04

Redmile Group, LLC

CIK 0001425738

$136M4.2M8.98%Q1 2026 05

Lynx1 Capital Management LP

CIK 0001910456

$132M4.0M15.27%Q2 2026 06

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$115M3.5M0.02%Q2 2026 07

MORGAN STANLEY

CIK 0000895421

$113M3.5M0.01%Q2 2026 08

BAKER BROS. ADVISORS LP

CIK 0001263508

$106M3.3M0.62%Q4 2025 09

TORONTO DOMINION BANK

CIK 0000947263

$104M3.2M0.12%Q2 2026 10

STATE STREET CORP

CIK 0000093751

$93M2.9M0.00%Q2 2026 11

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$85M2.6M0.00%Q2 2026 12

Assenagon Asset Management S.A.

CIK 0001546007· Quasi-passive

$74M2.3M0.05%Q2 2026 13

BVF INC/IL

CIK 0001056807

$72M2.3M2.42%Q4 2025 14

Siren, L.L.C.

CIK 0002005245

$65M2.0M1.32%Q2 2026 15

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$63M1.9M0.01%Q1 2026 16

Jupiter Topco LLC

CIK 0002146052

$59M1.8M0.02%Q2 2026 17

DEERFIELD MANAGEMENT COMPANY, L.P.

CIK 0001009258

$58M1.8M0.74%Q4 2025 18

Skorpios Trust

CIK 0001869333

$53M2.3M99.68%Q3 2025 19

JANUS HENDERSON GROUP PLC

CIK 0001274173

$52M1.6M0.03%Q1 2026 20

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$50M1.5M0.00%Q2 2026

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