AI Holders Summary · Q1 2026

150 institutions reported BIOA in Q1 2026. a16z Capital Management, L.L.C. leads at 12.0% 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

a16z Capital Management, L.L.C.

CIK 0001540358

$57M3.2M4.38%Q1 2026 02

Cormorant Asset Management, LP

CIK 0001583977

$51M2.9M2.54%Q1 2026 03

Sofinnova Investments, Inc.

CIK 0001631134

$40M2.3M1.52%Q1 2026 04

BlackRock, Inc.

CIK 0002012383

$40M2.3M0.00%Q1 2026 05

JANUS HENDERSON GROUP PLC

CIK 0001274173

$37M2.1M0.02%Q1 2026 06

Octagon Capital Advisors LP

CIK 0001839435

$31M1.7M3.38%Q1 2026 07

RA CAPITAL MANAGEMENT, L.P.

CIK 0001346824

$29M1.7M0.31%Q1 2026 08

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$24M1.4M0.00%Q1 2026 09

BALYASNY ASSET MANAGEMENT L.P.

CIK 0001218710

$23M1.3M0.03%Q1 2026 10

BRAIDWELL LP

CIK 0001920938

$21M1.2M0.70%Q1 2026 11

Polar Capital Holdings Plc

CIK 0001837309

$20M1.1M0.07%Q1 2026 12

STATE STREET CORP

CIK 0000093751

$15M851K0.00%Q1 2026 13

Sands Capital Alternatives, LLC

CIK 0001846444

$14M786K3.27%Q1 2026 14

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$13M749K0.00%Q1 2026 15

ORBIMED ADVISORS LLC

CIK 0001055951

$12M712K0.25%Q1 2026 16

STEMPOINT CAPITAL LP

CIK 0001952142

$12M677K1.14%Q1 2026 17

Pivotal bioVenture Partners Investment Advisor LLC

CIK 0001844645

$11M653K4.08%Q1 2026 18

Cosmic Management, LLC

CIK 0002113747

$9M502K3.84%Q1 2026 19

ADAGE CAPITAL PARTNERS GP, L.L.C.

CIK 0001165408

$9M500K0.01%Q1 2026 20

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$8M430K0.00%Q1 2026

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