AI Holders Summary · Q2 2026

337 institutions reported MIRM in Q2 2026. Frazier Life Sciences Management, L.P. leads at 15.9% 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

Frazier Life Sciences Management, L.P.

CIK 0001892134

$899M7.7M19.58%Q2 2026 02

Jupiter Topco LLC

CIK 0002146052

$692M5.9M0.28%Q2 2026 03

JANUS HENDERSON GROUP PLC

CIK 0001274173

$642M6.9M0.31%Q1 2026 04

BlackRock, Inc.

CIK 0002012383

$514M4.4M0.01%Q2 2026 05

FMR LLC

CIK 0000315066

$430M3.7M0.02%Q2 2026 06

Vanguard Portfolio Management

CIK 0002100121· Index

$278M2.4M0.01%Q2 2026 07

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$264M2.3M0.01%Q2 2026 08

STATE STREET CORP

CIK 0000093751

$254M2.2M0.01%Q2 2026 09

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

CIK 0001644956

$164M1.4M0.49%Q2 2026 10

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$163M1.4M0.01%Q2 2026 11

Invesco Ltd.

CIK 0000914208

$160M1.4M0.01%Q2 2026 12

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$159M1.7M0.02%Q1 2026 13

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$153M1.3M0.03%Q2 2026 14

EVENTIDE ASSET MANAGEMENT, LLC

CIK 0001442891

$146M1.2M1.95%Q2 2026 15

Capital World Investors

CIK 0001422849

$135M1.2M0.02%Q2 2026 16

FRANKLIN RESOURCES INC

CIK 0000038777

$135M1.2M0.03%Q2 2026 17

TCG Crossover Management, LLC

CIK 0001839948

$124M1.1M2.99%Q2 2026 18

BVF INC/IL

CIK 0001056807

$118M1.5M3.98%Q4 2025 19

TANG CAPITAL MANAGEMENT LLC

CIK 0001232621

$114M1.2M5.80%Q1 2026 20

Novo Holdings A/S

CIK 0001388325

$100M1.3M7.75%Q4 2025

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