AI Holders Summary · Q2 2026

177 institutions reported BCAX in Q2 2026. RA CAPITAL MANAGEMENT, L.P. leads at 13.4% 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

RA CAPITAL MANAGEMENT, L.P.

CIK 0001346824

$215M7.3M1.87%Q2 2026 02

Siren, L.L.C.

CIK 0002005245

$166M5.6M3.37%Q2 2026 03

T. Rowe Price Investment Management, Inc.

CIK 0001897612

$131M6.6M0.09%Q1 2026 04

Deep Track Capital, LP

CIK 0001856083

$122M4.1M1.77%Q2 2026 05

BlackRock, Inc.

CIK 0002012383

$114M3.8M0.00%Q2 2026 06

Vestal Point Capital, LP

CIK 0001974915

$108M5.4M3.02%Q1 2026 07

Jupiter Topco LLC

CIK 0002146052

$94M3.2M0.04%Q2 2026 08

Red Tree Management, LLC

CIK 0002055980

$94M3.2M63.77%Q2 2026 09

JANUS HENDERSON GROUP PLC

CIK 0001274173

$66M3.3M0.03%Q1 2026 10

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$66M2.2M0.00%Q2 2026 11

STATE STREET CORP

CIK 0000093751

$61M2.0M0.00%Q2 2026 12

TPG GP A, LLC

CIK 0001903793

$60M3.0M1.63%Q1 2026 13

FRANKLIN RESOURCES INC

CIK 0000038777

$58M2.0M0.01%Q2 2026 14

FMR LLC

CIK 0000315066

$56M1.9M0.00%Q2 2026 15

Omega Fund Management, LLC

CIK 0001637359

$54M1.8M29.14%Q2 2026 16

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$35M1.2M0.00%Q2 2026 17

JPMORGAN CHASE & CO

CIK 0000019617

$30M1.0M0.00%Q2 2026 18

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$27M1.4M0.00%Q1 2026 19

Jones Hill Capital LP

CIK 0002102314

$27M893K5.63%Q2 2026 20

ACORN CAPITAL ADVISORS, LLC

CIK 0002054410

$19M643K5.21%Q2 2026

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