As of February 2026 MasTec has a market cap of C$26.88 Billion. This makes MasTec the world's 1181th 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 Feb 3rd, 2026 the market cap of MasTec was reported to be: