About
ONEOK appears at No. 293 in the 2026 Global 2000, a multi-factor ranking based on sales, profits, assets and market value. The company is headquartered in Tulsa, Oklahoma, United States and operates primarily in oil & gas operations. Reported figures used for the ranking include $35.2B in sales, $3.5B in profit, $68.2B in assets and a market value of $58.2B.