AI Holders Summary · Q2 2026

432 institutions reported MATX in Q2 2026. BlackRock, Inc. leads at 29.1% 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

BlackRock, Inc.

CIK 0002012383

$953M5.0M0.01%Q2 2026 02

Vanguard Portfolio Management

CIK 0002100121· Index

$332M2.0M0.02%Q1 2026 03

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$319M1.9M0.07%Q1 2026 04

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$246M1.5M0.13%Q1 2026 05

STATE STREET CORP

CIK 0000093751

$232M1.2M0.01%Q2 2026 06

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$218M1.3M0.01%Q1 2026 07

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$127M775K0.01%Q1 2026 08

Capital Research Global Investors

CIK 0001422848

$104M635K0.02%Q1 2026 09

FULLER & THALER ASSET MANAGEMENT, INC.

CIK 0001082327

$101M613K0.34%Q1 2026 10

T. Rowe Price Investment Management, Inc.

CIK 0001897612

$87M528K0.06%Q1 2026 11

MORGAN STANLEY

CIK 0000895421

$68M414K0.00%Q1 2026 12

NORTHERN TRUST CORP

CIK 0000073124· Index

$63M383K0.01%Q1 2026 13

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

CIK 0000884546· Index

$61M373K0.01%Q1 2026 14

Boston Partners

CIK 0001386060

$58M297K0.05%Q2 2026 15

D. E. Shaw & Co., Inc.

CIK 0001009207

$55M448K0.03%Q4 2025 16

FMR LLC

CIK 0000315066

$53M324K0.00%Q1 2026 17

BALYASNY ASSET MANAGEMENT L.P.

CIK 0001218710

$52M315K0.07%Q1 2026 18

LSV ASSET MANAGEMENT

CIK 0001050470

$51M309K0.11%Q1 2026 19

Bank of New York Mellon Corp

CIK 0001390777

$51M263K0.01%Q2 2026 20

LONDON CO OF VIRGINIA

CIK 0001259887

$40M244K0.25%Q1 2026

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