As of December 2025 Willis Towers Watson has a market cap of โน2.804 Trillion. This makes Willis Towers Watson the world's 745th 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 4th, 2025 the market cap of Willis Towers Watson was reported to be: