AI Holders Summary · Q1 2026

482 institutions reported BBIO in Q1 2026. BlackRock, Inc. leads at 11.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

Hide index funds / market makers / custodians(5 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$1.1B14.2M0.02%Q1 2026 02

Kohlberg Kravis Roberts & Co. L.P.

CIK 0001399770

$985M13.3M18.42%Q1 2026 03

JANUS HENDERSON GROUP PLC

CIK 0001274173

$979M13.2M0.47%Q1 2026 04

VIKING GLOBAL INVESTORS LP

CIK 0001103804

$879M11.8M2.46%Q1 2026 05

FARALLON CAPITAL MANAGEMENT LLC

CIK 0000909661

$695M9.4M3.96%Q1 2026 06

Vanguard Portfolio Management

CIK 0002100121· Index

$600M8.1M0.03%Q1 2026 07

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$576M7.8M0.01%Q1 2026 08

UBS Group AG

CIK 0001610520

$437M5.9M0.07%Q1 2026 09

Aisling Capital Management LP

CIK 0001766721

$378M5.1M79.35%Q1 2026 10

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$372M4.9M0.02%Q1 2026 11

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$366M4.9M0.05%Q1 2026 12

STATE STREET CORP

CIK 0000093751

$366M4.9M0.01%Q1 2026 13

Invesco Ltd.

CIK 0000914208

$341M4.6M0.03%Q1 2026 14

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$282M3.8M0.03%Q1 2026 15

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$268M3.6M0.03%Q1 2026 16

Frazier Life Sciences Management, L.P.

CIK 0001892134

$256M3.4M6.59%Q1 2026 17

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$232M3.1M0.19%Q1 2026 18

Polar Capital Holdings Plc

CIK 0001837309

$187M2.5M0.66%Q1 2026 19

WELLINGTON MANAGEMENT GROUP LLP

CIK 0000902219

$184M2.5M0.03%Q1 2026 20

FRANKLIN RESOURCES INC

CIK 0000038777

$181M2.4M0.04%Q1 2026

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