AI Holders Summary · Q2 2026

59 institutions reported ACET in Q2 2026. RA CAPITAL MANAGEMENT, L.P. leads at 16.7% 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

RA CAPITAL MANAGEMENT, L.P.

CIK 0001346824

$8M933K0.07%Q2 2026 02

ORBIMED ADVISORS LLC

CIK 0001055951

$7M845K0.14%Q2 2026 03

FRANKLIN RESOURCES INC

CIK 0000038777

$5M627K0.00%Q2 2026 04

CITADEL ADVISORS LLC

CIK 0001423053

$4M466K0.00%Q2 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$3M343K0.00%Q2 2026 06

ADAGE CAPITAL PARTNERS GP, L.L.C.

CIK 0001165408

$2M274K0.00%Q2 2026 07

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$2M266K0.00%Q2 2026 08

Stonepine Capital Management, LLC

CIK 0001440771

$2M246K1.20%Q2 2026 09

Alyeska Investment Group, L.P.

CIK 0001453072

$2M204K0.00%Q2 2026 10

Prosight Management, LP

CIK 0001617201

$2M250K0.28%Q1 2026 11

Schonfeld Strategic Advisors LLC

CIK 0001665241

$2M196K0.01%Q2 2026 12

Carlyle Group Inc.

CIK 0001527166

$2M184K0.02%Q2 2026 13

NEXTBio Capital Management LP

CIK 0002038158

$1M158K0.63%Q2 2026 14

TWO SIGMA ADVISERS, LP

CIK 0001478735

$937K111K0.00%Q4 2025 15

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$837K97K0.00%Q2 2026 16

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$827K96K0.00%Q2 2026 17

DAFNA Capital Management LLC

CIK 0001389933

$811K94K0.15%Q2 2026 18

ACADIAN ASSET MANAGEMENT LLC

CIK 0000916542

$802K118K0.00%Q1 2026 19

BRIDGEWAY CAPITAL MANAGEMENT, LLC

CIK 0001107261

$743K86K0.01%Q2 2026 20

MARSHALL WACE, LLP

CIK 0001318757

$687K79K0.00%Q2 2026

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