As of January 2026 ONE Gas has a market cap of โน422.30 Billion. This makes ONE Gas the world's 3244th 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 Jan 14th, 2026 the market cap of ONE Gas was reported to be: