AI Holders Summary · Q1 2026

123 institutions reported ACTG in Q1 2026. Starboard Value LP leads at 75.1% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(6 on this page)

#HolderValueShares% port.Quarter

Starboard Value LP

CIK 0001517137

$294M61.1M6.43%Q1 2026 02

STATE STREET CORP

CIK 0000093751

$15M3.2M0.00%Q2 2026 03

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$14M2.9M0.00%Q2 2026 04

BlackRock, Inc.

CIK 0002012383

$12M2.6M0.00%Q2 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$7M1.5M0.00%Q2 2026 06

RENAISSANCE TECHNOLOGIES LLC

CIK 0001037389

$7M1.4M0.01%Q2 2026 07

GOLDMAN SACHS GROUP INC

CIK 0000886982

$5M1.2M0.00%Q2 2026 08

Krilogy Financial LLC

CIK 0001659047

$5M1.1M0.16%Q2 2026 09

Peapod Lane Capital LLC

CIK 0002050979

$5M995K3.13%Q2 2026 10

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$4M901K0.00%Q2 2026 11

Pacific Ridge Capital Partners, LLC

CIK 0001591546

$4M811K0.69%Q2 2026 12

Formidable Asset Management, LLC

CIK 0001592613

$4M793K0.59%Q2 2026 13

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$3M693K0.00%Q2 2026 14

BRIDGEWAY CAPITAL MANAGEMENT, LLC

CIK 0001107261

$3M629K0.05%Q2 2026 15

AEGIS FINANCIAL CORP

CIK 0001140753

$2M491K0.36%Q2 2026 16

Tidal Investments LLC

CIK 0001600064

$2M424K0.00%Q2 2026 17

Empowered Funds, LLC

CIK 0001592828

$2M366K0.01%Q2 2026 18

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$1M310K0.00%Q2 2026 19

NORTHERN TRUST CORP

CIK 0000073124· Index

$1M290K0.00%Q2 2026 20

Vanguard Portfolio Management

CIK 0002100121· Index

$1M289K0.00%Q2 2026

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