AI Holders Summary · Q2 2026

68 institutions reported BBOT in Q2 2026. Cormorant Asset Management, LP leads at 30.3% 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

Cormorant Asset Management, LP

CIK 0001583977

$136M17.9M6.98%Q2 2026 02

DEERFIELD MANAGEMENT COMPANY, L.P.

CIK 0001009258

$61M4.9M0.78%Q4 2025 03

Omega Fund Management, LLC

CIK 0001637359

$25M3.3M13.50%Q2 2026 04

Novo Holdings A/S

CIK 0001388325

$25M2.0M1.91%Q4 2025 05

EcoR1 Capital, LLC

CIK 0001587114

$22M2.8M1.05%Q2 2026 06

Alphabet Inc.

CIK 0001652044

$22M2.8M0.02%Q2 2026 07

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$21M2.8M0.00%Q2 2026 08

Enavate Sciences GP, LLC

CIK 0001953107

$20M2.6M5.80%Q2 2026 09

CITADEL ADVISORS LLC

CIK 0001423053

$20M2.6M0.00%Q2 2026 10

BlackRock, Inc.

CIK 0002012383

$16M2.2M0.00%Q2 2026 11

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$15M2.0M0.00%Q2 2026 12

Laurion Capital Management LP

CIK 0001390202

$15M2.0M0.39%Q2 2026 13

ARMISTICE CAPITAL, LLC

CIK 0001601086

$13M1.8M0.16%Q2 2026 14

STATE STREET CORP

CIK 0000093751

$8M1.0M0.00%Q2 2026 15

Aisling Capital Management LP

CIK 0001766721

$8M1.0M1.64%Q2 2026 16

Opaleye Management Inc.

CIK 0001595855

$5M700K0.48%Q2 2026 17

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$5M622K0.00%Q2 2026 18

Granahan Investment Management, LLC

CIK 0001026710

$4M559K0.15%Q2 2026 19

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$4M438K0.00%Q1 2026 20

SPHERA FUNDS MANAGEMENT LTD.

CIK 0001496201

$4M461K0.46%Q2 2026

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