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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

MAS

Superinvestors

Institutional investors holding MAS

Consensus →
InvestorFundWeightSharesValueQuarter
David TepperAppaloosa Management1.56%2,354,832$62.8M2015Q2
Bill NygrenOakmark Select Fund – Harris Associates0.92%11,501,911$729.9M2025Q4
Ariel InvestmentsAriel Investments (Bobrinskoy & Rogers)0.28%405,488$25.7M2025Q4
Yacktman Asset ManagementYacktman Asset Management0.21%233,847$14.8M2025Q4

Congressional Activity

Congressional data coming soon

Insider Activity

1

Total trades

$660K

Volume

0

Buys

1

Sells

Last trade: Dec 29, 2021

Insider Tradeslast 90 days

No insider trades in the last 90 days.

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.