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MTRN Institutional Ownership

Top institutional (13F) holders of MTRN and activist (13D/G) positions, sourced from SEC EDGAR.

Institutional owners
43
Institutional value
$3.96B
Top holder
BlackRock, Inc.

Top holders

HolderFiledValue
BlackRock, Inc.holding companyAug 7, 2026$1.03B
STATE STREET CORPinvestment advisorAug 7, 2026$433.05M
Vanguard Portfolio Managementhedge fundAug 13, 2026$415.32M
Capital Research Global Investorsinvestment advisorAug 12, 2026$297.53M
Vanguard Capital Managementhedge fundAug 13, 2026$278.82M
GEODE CAPITAL MANAGEMENT, LLCinvestment advisorAug 12, 2026$175.79M
Dimensional Fund Advisors LPhedge fundAug 11, 2026$171.87M
Fisher Asset Management, LLCinvestment advisorAug 4, 2026$147.28M
MORGAN STANLEYinvestment advisorAug 13, 2026$122.27M
PRICE T ROWE ASSOCIATES INC /MD/investment advisorAug 14, 2026$97.93M
CHARLES SCHWAB INVESTMENT MANAGEMENT INCinvestment advisorAug 14, 2026$80.58M
NORTHERN TRUST CORPinvestment advisorAug 13, 2026$78.71M
GOLDMAN SACHS GROUP INCinvestment advisorAug 14, 2026$70.14M
Capital World Investorsinvestment advisorMay 13, 2026$60.03M
Invesco Ltd.investment advisorAug 14, 2026$59.51M
BANK OF AMERICA CORP /DE/investment advisorAug 14, 2026$51.48M
Bank of New York Mellon Corpholding companyAug 6, 2026$49.06M
WELLINGTON MANAGEMENT GROUP LLPinvestment advisorAug 14, 2026$47.09M
ROYAL BANK OF CANADAinvestment advisorAug 14, 2026$45.90M
JPMORGAN CHASE & COinvestment advisorAug 12, 2026$31.59M
CITADEL ADVISORS LLCinvestment advisorAug 14, 2026$26.81M
Ameriprise Financial, Inc.holding companyAug 14, 2026$22.79M
FMR LLCinvestment advisorAug 13, 2026$22.51M
JANE STREET GROUP, LLCholding companyAug 14, 2026$20.93M
AQR CAPITAL MANAGEMENT LLCinvestment advisorAug 14, 2026$20.77M

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Source: SEC EDGAR Schedule 13D / 13G and 13F filings.