As of December 2025 Phillips 66 has a market cap of A$78.40 Billion. This makes Phillips 66 the world's 448th 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 21st, 2025 the market cap of Phillips 66 was reported to be: