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 2021Gardner Russo & QuinnSell-23,6191,168,678$514,826
Q4 2021Sequoia Financial AdvisorsBuy107908$400
Q4 2021Lountzis Asset ManagementSell-5812,743$5,613,546
Q3 2021Gardner Russo & QuinnSell-43,4781,192,297$407,384
Q3 2021Lountzis Asset ManagementSell-512,801$4,373,845
Q2 2021Gardner Russo & QuinnSell-34,7751,235,775$434,758
Q2 2021Lountzis Asset ManagementBuy17012,806$4,503
Q2 2021Sequoia Financial AdvisorsSell-22801$282
Q1 2021Egerton Capital UKSell-192,929180,271$60,539
Q1 2021Gardner Russo & QuinnSell-125,2831,270,550$426,676
Q1 2021Lountzis Asset ManagementSell-23512,636$4,241,742
Q1 2021Sequoia Financial AdvisorsBuy8823$276
Q4 2020Egerton Capital UKSell-547,300373,200$105,978
Q4 2020Gardner Russo & QuinnSell-105,1051,395,833$396,375
Q4 2020Sequoia Financial AdvisorsBuy815815$232
Q3 2020Egerton Capital UKSell-320,556920,500$216,649
Q3 2020Gardner Russo & QuinnSell-62,9981,500,938$353,261
Q3 2020First Eagle U.S. ValueSell-62,052115,000$27,066
Q2 2020Gardner Russo & QuinnSell-85,8801,563,936$323,062
Q2 2020Lountzis Asset ManagementBuy12,87112,871$2,659
Q1 2020Gardner Russo & QuinnSell-37,4381,649,816$312,195
Q1 2020First Eagle U.S. ValueSell-7,254177,052$33,504
Q4 2019Egerton Capital UKSell-493,9171,241,056$347,049
Q4 2019Renaissance Technologies LLCSell-73,32449,470$13,834
Q4 2019Gardner Russo & QuinnSell-50,4231,687,254$471,824
Q4 2019First Eagle U.S. ValueSell-7,800184,306$51,539
Q3 2019Egerton Capital UKSell-410,7921,734,973$475,556
Q3 2019First Eagle U.S. ValueSell-112,200192,106$52,656
Q3 2019Gardner Russo & QuinnSell-56,7731,737,677$476,297
Q2 2019Egerton Capital UKSell-58,9372,145,765$493,762

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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