AI Holders Summary · Q2 2026

156 institutions reported ACRS in Q2 2026. RA CAPITAL MANAGEMENT, L.P. leads at 13.1% 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

RA CAPITAL MANAGEMENT, L.P.

CIK 0001346824

$67M12.7M0.58%Q2 2026 02

BML Capital Management, LLC

CIK 0001616824

$63M12.0M35.98%Q2 2026 03

BlackRock, Inc.

CIK 0002012383

$53M10.0M0.00%Q2 2026 04

Deep Track Capital, LP

CIK 0001856083

$49M9.3M0.72%Q2 2026 05

Vivo Capital, LLC

CIK 0001674712

$35M6.7M3.23%Q2 2026 06

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$31M5.8M0.00%Q2 2026 07

Frazier Life Sciences Management, L.P.

CIK 0001892134

$26M4.9M0.57%Q2 2026 08

Rock Springs Capital Management LP

CIK 0001595725

$23M4.3M1.12%Q2 2026 09

ADAGE CAPITAL PARTNERS GP, L.L.C.

CIK 0001165408

$22M4.1M0.03%Q2 2026 10

Decheng Capital LLC

CIK 0002010850

$21M4.0M2.92%Q2 2026 11

Kalehua Capital Management LLC

CIK 0002106181

$19M3.7M6.18%Q2 2026 12

STATE STREET CORP

CIK 0000093751

$17M3.3M0.00%Q2 2026 13

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$17M3.2M0.00%Q2 2026 14

CITADEL ADVISORS LLC

CIK 0001423053

$13M2.4M0.00%Q2 2026 15

BALYASNY ASSET MANAGEMENT L.P.

CIK 0001218710

$11M2.0M0.01%Q2 2026 16

SILVERARC CAPITAL MANAGEMENT, LLC

CIK 0001816307

$10M1.9M1.07%Q2 2026 17

Jones Hill Capital LP

CIK 0002102314

$9M1.8M1.98%Q2 2026 18

Palo Alto Investors LP

CIK 0001306923

$9M1.6M1.18%Q2 2026 19

Woodline Partners LP

CIK 0001784547

$9M1.6M0.03%Q2 2026 20

Vanguard Portfolio Management

CIK 0002100121· Index

$8M1.5M0.00%Q2 2026

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