As of April 2026 ONE Gas has a market cap of โน518.55 Billion. This makes ONE Gas the world's 2964th 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 Apr 13th, 2026 the market cap of ONE Gas was reported to be: