MASTEC INC (MTZ) Institutional Ownership Changes & 13F Activity

MASTEC INC (MTZ). 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 Lone Pine Capital, Third Point, Muhlenkamp & Co, Sequoia Financial Advisors, and Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2026Lone Pine CapitalBuy1,531,0501,531,050$492,600,027
Q1 2026Third PointSell-605,000320,000$102,956,800
Q1 2026Muhlenkamp & CoSell-62,92842,832$13,780,768
Q1 2026Sequoia Financial AdvisorsBuy3,41120,058$6,453,610
Q4 2025Third PointBuy200,000925,000$201,067,250
Q4 2025Sequoia Financial AdvisorsBuy12,97116,647$3,618,659
Q4 2025Muhlenkamp & CoSell-26105,760$22,989,051
Q3 2025Third PointBuy725,000725,000$154,287,250
Q3 2025Sequoia Financial AdvisorsBuy6473,676$782,389
Q3 2025Muhlenkamp & CoSell-298105,786$22,512,323
Q2 2025Renaissance Technologies LLCSell-55,40066,323$11,303,429
Q2 2025Sequoia Financial AdvisorsBuy7763,029$516,312
Q2 2025Muhlenkamp & CoBuy625106,084$18,079,900
Q1 2025Sequoia Financial AdvisorsBuy5652,253$263,002
Q1 2025Muhlenkamp & CoSell-45105,459$12,308,145
Q4 2024Renaissance Technologies LLCSell-36,600121,723$16,571,369
Q4 2024Sequoia Financial AdvisorsSell-6671,688$229,805
Q4 2024Muhlenkamp & CoBuy233105,504$14,363,344
Q3 2024Sequoia Financial AdvisorsBuy2,3552,355$289,901
Q3 2024Muhlenkamp & CoBuy24105,271$12,958,887
Q2 2024Muhlenkamp & CoSell-27,743105,247$11,260,377
Q1 2024Muhlenkamp & CoBuy1,981132,990$12,401,318
Q4 2023Muhlenkamp & CoBuy1,332131,009$9,920,001
Q3 2023Muhlenkamp & CoBuy1,858129,677$9,332,854
Q2 2023Hancock Classic ValueSell-347,801201,777$23,803,633
Q2 2023Muhlenkamp & CoSell-398127,819$15,078,807
Q1 2023Hancock Classic ValueSell-322,993549,578$51,902,146
Q4 2022Renaissance Technologies LLCSell-96,377158,323$13,510
Q4 2022Hancock Classic ValueSell-26,238872,571$74,456,483
Q4 2022Muhlenkamp & CoSell-124128,217$10,940,757

Frequently asked questions about MTZ activity

  • Which institutional owners are buying MTZ?

    Institutional owners buying MTZ 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 MTZ activity?

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

  • Is institutional interest in MTZ increasing?

    Institutional interest in MTZ 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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