As of February 2026 Williams Companies has a market cap of S$103.56 Billion. This makes Williams Companies the world's 285th 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 Feb 1st, 2026 the market cap of Williams Companies was reported to be: