As of June 2026 MasTec has a market cap of โน2.822 Trillion. This makes MasTec the world's 829th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Jun 17th, 2026 the market cap of MasTec was reported to be: