MARTIN MARIETTA MATERIALS (MLM) Institutional Ownership Changes & 13F Activity

MARTIN MARIETTA MATERIALS (MLM). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Eagle Capital Management, Gardner Russo & Quinn, Sequoia Financial Advisors, Lountzis Asset Management, and Egerton Capital UK.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2013Gardner Russo & QuinnBuy145,5021,931,562$193,040
Q4 2013Longleaf PartnersSell-57,6001,039,807$103,918
Q4 2013First Eagle U.S. ValueSell-12,8002,503,415$250,191
Q3 2013Longleaf PartnersSell-95,6051,097,407$107,732
Q3 2013Gardner Russo & QuinnBuy48,5551,786,060$175,338
Q3 2013First Eagle U.S. ValueBuy37,1242,516,215$247,017
Q2 2013First Eagle U.S. ValueBuy2,479,0912,479,091$243,992
Q2 2013Gardner Russo & QuinnBuy1,737,5051,737,505$171,005
Q2 2013Longleaf PartnersBuy1,193,0121,193,012$117,416

Frequently asked questions about MLM activity

  • Which institutional owners are buying MLM?

    Institutional owners buying MLM include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MLM activity?

    "Buy" means an investor increased their reported position in MLM compared to the prior reporting period. This reflects growing exposure to MARTIN MARIETTA MATERIALS (MLM) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MLM increasing?

    Institutional interest in MLM can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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