AI Holders Summary · Q4 2025

103 institutions reported BCYC in Q4 2025. BAKER BROS. ADVISORS LP leads at 42.3% 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

BAKER BROS. ADVISORS LP

CIK 0001263508

$77M10.9M0.45%Q4 2025 02

FCPM III SERVICES B.V.

CIK 0002013410

$16M3.5M2.23%Q1 2026 03

ARMISTICE CAPITAL, LLC

CIK 0001601086

$16M3.4M0.28%Q1 2026 04

Long Focus Capital Management, LLC

CIK 0001602716

$15M3.3M0.40%Q1 2026 05

ACADIAN ASSET MANAGEMENT LLC

CIK 0000916542

$9M2.0M0.01%Q1 2026 06

Siren, L.L.C.

CIK 0002005245

$7M1.6M0.20%Q1 2026 07

GSK plc

CIK 0001131399

$7M1.5M1.18%Q1 2026 08

PRINCIPAL FINANCIAL GROUP INC

CIK 0001126328

$5M1.2M0.00%Q1 2026 09

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$5M1.0M0.00%Q1 2026 10

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$5M979K0.01%Q1 2026 11

MORGAN STANLEY

CIK 0000895421

$3M618K0.00%Q1 2026 12

SCHRODER INVESTMENT MANAGEMENT GROUP

CIK 0001086619

$3M616K0.00%Q1 2026 13

CITADEL ADVISORS LLC

CIK 0001423053

$2M313K0.00%Q4 2025 14

DIADEMA PARTNERS LP

CIK 0002026172

$2M476K0.38%Q1 2026 15

Birchview Capital, LP

CIK 0001618205

$2M464K1.22%Q1 2026 16

SILVERCREST ASSET MANAGEMENT GROUP LLC

CIK 0001232395

$2M429K0.01%Q1 2026 17

Qube Research & Technologies Ltd

CIK 0001729829

$1M309K0.00%Q1 2026 18

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$1M303K0.00%Q1 2026 19

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$1M297K0.00%Q1 2026 20

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$1M284K0.00%Q1 2026

Page 1 of 6

83 more holders available. Log in →