As of September 2026 Phillips 66 has a market cap of โน10.499 Trillion. This makes Phillips 66 the world's 207th 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 Sep 19th, 2026 the market cap of Phillips 66 was reported to be: