AI Holders Summary · Q1 2026

145 institutions reported SLDB in Q1 2026. PERCEPTIVE ADVISORS LLC leads at 14.5% 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

PERCEPTIVE ADVISORS LLC

CIK 0001224962

$86M11.9M1.68%Q1 2026 02

Bain Capital Life Sciences Investors, LLC

CIK 0001703031

$71M9.8M6.37%Q1 2026 03

RA CAPITAL MANAGEMENT, L.P.

CIK 0001346824

$67M9.3M0.71%Q1 2026 04

Siren, L.L.C.

CIK 0002005245

$55M7.7M1.53%Q1 2026 05

Vestal Point Capital, LP

CIK 0001974915

$36M5.0M1.01%Q1 2026 06

BlackRock, Inc.

CIK 0002012383

$36M5.0M0.00%Q1 2026 07

JANUS HENDERSON GROUP PLC

CIK 0001274173

$29M4.0M0.01%Q1 2026 08

FMR LLC

CIK 0000315066

$26M3.6M0.00%Q1 2026 09

Deep Track Capital, LP

CIK 0001856083

$26M3.6M0.42%Q1 2026 10

ARMISTICE CAPITAL, LLC

CIK 0001601086

$23M3.2M0.41%Q1 2026 11

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$19M2.7M0.00%Q1 2026 12

AMERIPRISE FINANCIAL INC

CIK 0000820027

$18M2.4M0.00%Q1 2026 13

FRANKLIN RESOURCES INC

CIK 0000038777

$16M2.2M0.00%Q1 2026 14

CITADEL ADVISORS LLC

CIK 0001423053

$15M2.7M0.00%Q4 2025 15

Point72 Asset Management, L.P.

CIK 0001603466

$15M2.1M0.02%Q1 2026 16

Redmile Group, LLC

CIK 0001425738

$14M2.0M0.96%Q1 2026 17

ADAGE CAPITAL PARTNERS GP, L.L.C.

CIK 0001165408

$13M1.8M0.02%Q1 2026 18

Monashee Investment Management LLC

CIK 0001627608

$10M1.4M5.56%Q1 2026 19

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$9M1.3M0.00%Q1 2026 20

Nantahala Capital Management, LLC

CIK 0001472322

$8M1.2M0.31%Q1 2026

Page 1 of 8

125 more holders available. Log in →