As of April 2026 Diageo has a market cap of โน4.249 Trillion. This makes Diageo the world's 553th 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, 2026 the market cap of Diageo was reported to be: