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

MRO

Superinvestors

Institutional investors holding MRO

Consensus →
InvestorFundWeightSharesValueQuarter
Kopernik Global InvestorsKopernik Global Investors6.67%2,530,870$34.3M2017Q3
David EinhornGreenlight Capital1.00%2,162,700$46.7M2011Q3
David TepperAppaloosa Management0.87%704,000$37.1M2011Q2
William Von MuefflingCantillon Capital Management0.22%202,392$12.3M2007Q4
Meridian / ArrowMarkMeridian Contrarian Fund0.05%41,900$1.5M2014Q1
Kenneth FisherFisher Asset Management0.03%2,884,151$76.8M2024Q3
Bill NygrenOakmark Select Fund – Harris Associates0.01%8,295$312K2004Q4
Christopher DavisDavis Selected Advisers0.00%17,200$466K2002Q2
Jensen Investment ManagementJensen Investment Management0.00%54$1K2008Q4
Ruane CunniffSequoia Fund0.00%4,650$241K2008Q2

Congressional Activity

Congressional data coming soon

Insider Activity

No insider trades in the last 90 days

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.