As of December 2025 Diageo has a market cap of โน4.483 Trillion. This makes Diageo the world's 468th 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 13th, 2025 the market cap of Diageo was reported to be: