As of December 2025 ONE Gas has a market cap of โน416.63 Billion. This makes ONE Gas the world's 3213th 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 ONE Gas was reported to be: