AI Holders Summary · Q2 2026

343 institutions reported ATKR in Q2 2026. BlackRock, Inc. leads at 15.5% 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

BlackRock, Inc.

CIK 0002012383

$237M3.1M0.00%Q2 2026 02

Vanguard Portfolio Management

CIK 0002100121· Index

$161M2.1M0.01%Q2 2026 03

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$135M1.8M0.06%Q2 2026 04

Gates Capital Management, Inc.

CIK 0001312908

$130M1.7M3.13%Q2 2026 05

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$116M1.5M0.00%Q2 2026 06

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$99M1.3M0.02%Q2 2026 07

STATE STREET CORP

CIK 0000093751

$69M906K0.00%Q2 2026 08

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$69M902K0.00%Q2 2026 09

LSV ASSET MANAGEMENT

CIK 0001050470

$62M1.1M0.13%Q1 2026 10

EARNEST PARTNERS LLC

CIK 0001102578

$59M772K0.21%Q2 2026 11

Hill City Capital, LP

CIK 0001837343

$55M724K1.29%Q2 2026 12

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

CIK 0001705339

$44M576K0.05%Q2 2026 13

HARDING LOEVNER LP

CIK 0000928196

$43M567K0.41%Q2 2026 14

FIRST TRUST ADVISORS LP

CIK 0001125816· Index

$41M533K0.02%Q2 2026 15

JPMORGAN CHASE & CO

CIK 0000019617

$39M521K0.00%Q2 2026 16

Irenic Capital Management LP

CIK 0001929389

$39M508K1.85%Q2 2026 17

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

CIK 0001164508

$37M482K0.02%Q2 2026 18

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

CIK 0000884546· Index

$35M454K0.00%Q2 2026 19

BANK OF AMERICA CORP /DE/

CIK 0000070858

$33M439K0.00%Q2 2026 20

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$31M402K0.02%Q2 2026

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