AI Holders Summary · Q1 2026

183 institutions reported ACLX in Q1 2026. Paradigm Biocapital Advisors LP leads at 16.6% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(4 on this page)

#HolderValueShares% port.Quarter

Paradigm Biocapital Advisors LP

CIK 0001855655

$663M5.8M13.55%Q1 2026 02

NEA Management Company, LLC

CIK 0001512848

$350M3.0M19.88%Q1 2026 03

Pentwater Capital Management LP

CIK 0001425851

$330M2.9M1.71%Q1 2026 04

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$278M2.4M0.01%Q1 2026 05

Vanguard Portfolio Management

CIK 0002100121· Index

$278M2.4M0.01%Q1 2026 06

SR ONE CAPITAL MANAGEMENT, LP

CIK 0001910264

$269M2.3M29.43%Q1 2026 07

FIL Ltd

CIK 0000318989

$269M2.3M0.21%Q1 2026 08

HBK INVESTMENTS L P

CIK 0001011443

$262M2.3M2.65%Q1 2026 09

T. Rowe Price Investment Management, Inc.

CIK 0001897612

$259M2.3M0.18%Q1 2026 10

GLAZER CAPITAL, LLC

CIK 0001076809

$173M1.5M3.67%Q1 2026 11

GOLDMAN SACHS GROUP INC

CIK 0000886982

$157M1.4M0.02%Q1 2026 12

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$118M1.0M0.01%Q1 2026 13

MORGAN STANLEY

CIK 0000895421

$106M926K0.01%Q1 2026 14

CITADEL ADVISORS LLC

CIK 0001423053

$100M1.5M0.01%Q4 2025 15

JPMORGAN CHASE & CO

CIK 0000019617

$68M594K0.00%Q1 2026 16

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$66M572K0.01%Q1 2026 17

DAVIDSON KEMPNER CAPITAL MANAGEMENT LP

CIK 0001595082

$64M560K0.88%Q1 2026 18

TIG Advisors, LLC

CIK 0001358253

$62M541K2.87%Q1 2026 19

MILLENNIUM MANAGEMENT LLC

CIK 0001273087

$58M503K0.02%Q1 2026 20

BALYASNY ASSET MANAGEMENT L.P.

CIK 0001218710

$55M480K0.07%Q1 2026

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