AI Holders Summary · Q4 2025

153 institutions reported ABCL in Q4 2025. BAKER BROS. ADVISORS LP leads at 23.3% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(1 on this page)

#HolderValueShares% port.Quarter

BAKER BROS. ADVISORS LP

CIK 0001263508

$94M27.5M0.55%Q4 2025 02

Capital World Investors

CIK 0001422849

$47M13.4M0.01%Q1 2026 03

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$37M10.6M0.03%Q1 2026 04

TD Waterhouse Canada Inc.

CIK 0001999606

$34M9.6M0.10%Q1 2026 05

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

CIK 0000861177

$26M7.6M0.01%Q1 2026 06

Jefferies Financial Group Inc.

CIK 0000096223

$19M5.5M0.13%Q1 2026 07

TWO SIGMA ADVISERS, LP

CIK 0001478735

$17M4.9M0.03%Q4 2025 08

UBS Group AG

CIK 0001610520

$15M4.2M0.00%Q1 2026 09

BlackRock, Inc.

CIK 0002012383

$14M4.0M0.00%Q1 2026 10

DRIEHAUS CAPITAL MANAGEMENT LLC

CIK 0000938206

$14M4.0M0.10%Q1 2026 11

ArrowMark Colorado Holdings LLC

CIK 0001483859

$14M4.1M0.31%Q4 2025 12

GOLDMAN SACHS GROUP INC

CIK 0000886982

$13M3.8M0.00%Q1 2026 13

BANK OF AMERICA CORP /DE/

CIK 0000070858

$10M3.0M0.00%Q1 2026 14

TUDOR INVESTMENT CORP ET AL

CIK 0000923093

$8M2.3M0.01%Q1 2026 15

MORGAN STANLEY

CIK 0000895421

$8M2.2M0.00%Q1 2026 16

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$8M2.2M0.00%Q1 2026 17

CITADEL ADVISORS LLC

CIK 0001423053

$8M2.2M0.00%Q4 2025 18

Counterpoint Mutual Funds LLC

CIK 0001698461

$8M972K0.75%Q2 2026 19

Guardian Partners Inc.

CIK 0001884799

$6M1.8M0.52%Q1 2026 20

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$5M1.5M0.01%Q1 2026

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