MASTEC INC (MTZ) Institutional Ownership and Insiders Activity

MASTEC INC (MTZ) is widely held by institutional investors, with 4 tracked firms reporting positions valued at approximately $619.55M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Lone Pine Capital is the largest disclosed holder, reporting approximately $492.60M in MTZ holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Lone Pine Capital representing the majority of disclosed value.

Recent insider activity includes 1 tracked Form 4 transaction over the last three months, reflecting ongoing executive and director trading activity.