As of June 2026 Willis Towers Watson has a market cap of ยฃ18.42 Billion. This makes Willis Towers Watson the world's 977th 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 Jun 8th, 2026 the market cap of Willis Towers Watson was reported to be: