As of May 2026 Atmos Energy has a market cap of โน2.834 Trillion. This makes Atmos Energy the world's 834th 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 May 21st, 2026 the market cap of Atmos Energy was reported to be: