As of March 2025 Omnicom has a market cap of £12.41 Billion. This makes Omnicom the world's 1158th 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 Mar 4th, 2025 the market cap of Omnicom was reported to be: