As of December 2025 Quanta Services has a market cap of โฌ55.59 Billion. This makes Quanta Services the world's 344th 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 Dec 11th, 2025 the market cap of Quanta Services was reported to be: