AI Holders Summary · Q4 2025

106 institutions reported BCYC in Q4 2025. BAKER BROS. ADVISORS LP leads at 44.2% 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

$15M3.5M1.96%Q2 2026 03

ARMISTICE CAPITAL, LLC

CIK 0001601086

$14M3.4M0.18%Q2 2026 04

Long Focus Capital Management, LLC

CIK 0001602716

$14M3.3M0.36%Q2 2026 05

ACADIAN ASSET MANAGEMENT LLC

CIK 0000916542

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

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$7M1.5M0.01%Q2 2026 07

GSK plc

CIK 0001131399

$6M1.5M1.08%Q2 2026 08

PRICE T ROWE ASSOCIATES INC /MD/

CIK 0000080255

$5M1.0M0.00%Q1 2026 09

MARSHALL WACE, LLP

CIK 0001318757

$3M798K0.00%Q2 2026 10

Qube Research & Technologies Ltd

CIK 0001729829

$3M776K0.00%Q2 2026 11

MORGAN STANLEY

CIK 0000895421

$3M667K0.00%Q2 2026 12

SCHRODER INVESTMENT MANAGEMENT GROUP

CIK 0001086619

$3M616K0.00%Q2 2026 13

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$2M554K0.00%Q2 2026 14

Peapod Lane Capital LLC

CIK 0002050979

$2M538K1.54%Q2 2026 15

CITADEL ADVISORS LLC

CIK 0001423053

$2M313K0.00%Q4 2025 16

DIADEMA PARTNERS LP

CIK 0002026172

$2M463K0.25%Q2 2026 17

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$2M435K0.00%Q2 2026 18

FLAX POND CAPITAL, LLC

CIK 0002106996

$2M376K0.62%Q2 2026 19

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$1M352K0.00%Q2 2026 20

JANE STREET GROUP, LLC

CIK 0001595888· Market maker

$1M303K0.00%Q1 2026

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