As of October 2026 Oneok has a market cap of S$72.88 Billion. This makes Oneok the world's 436th 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 Oct 7th, 2026 the market cap of Oneok was reported to be: