Aon is a British company based in London that is active in the insurance and risk management industries.
As of April 2025 Aon has a market cap of £57.49 Billion. This makes Aon the world's 232th 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 Apr 20th, 2025 the market cap of Aon was reported to be: