AI Holders Summary · Q2 2026

155 institutions reported MTRX in Q2 2026. BlackRock, Inc. leads at 12.6% of the visible book.

Top holders

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

Hide index funds / market makers / custodians(3 on this page)

#HolderValueShares% port.Quarter

BlackRock, Inc.

CIK 0002012383

$29M2.1M0.00%Q2 2026 02

First Eagle Investment Management, LLC

CIK 0001325447

$27M2.0M0.02%Q2 2026 03

NEEDHAM INVESTMENT MANAGEMENT LLC

CIK 0001167212

$17M1.4M1.06%Q4 2025 04

AMERICAN CENTURY COMPANIES INC

CIK 0000748054

$17M1.2M0.01%Q2 2026 05

GENDELL JEFFREY L

CIK 0001056581

$16M1.2M0.14%Q2 2026 06

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$16M1.2M0.00%Q2 2026 07

TWO SIGMA INVESTMENTS, LP

CIK 0001179392

$10M748K0.01%Q2 2026 08

Harvey Partners, LLC

CIK 0001406484

$10M853K0.88%Q4 2025 09

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$10M721K0.00%Q2 2026 10

Azarias Capital Management, L.P.

CIK 0001625279

$9M674K4.02%Q2 2026 11

DIMENSIONAL FUND ADVISORS LP

CIK 0000354204· Quasi-passive

$9M665K0.00%Q2 2026 12

WESTERLY CAPITAL MANAGEMENT, LLC

CIK 0001546172

$8M596K1.51%Q2 2026 13

AQR CAPITAL MANAGEMENT LLC

CIK 0001167557

$8M594K0.00%Q2 2026 14

STATE STREET CORP

CIK 0000093751

$8M581K0.00%Q2 2026 15

FIRST WILSHIRE SECURITIES MANAGEMENT INC

CIK 0000732847

$7M517K1.46%Q2 2026 16

JPMORGAN CHASE & CO

CIK 0000019617

$6M460K0.00%Q2 2026 17

Bank of New York Mellon Corp

CIK 0001390777

$6M457K0.00%Q2 2026 18

CITADEL ADVISORS LLC

CIK 0001423053

$6M455K0.00%Q2 2026 19

MORGAN STANLEY

CIK 0000895421

$6M437K0.00%Q2 2026 20

ACADIAN ASSET MANAGEMENT LLC

CIK 0000916542

$5M476K0.01%Q1 2026

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