As of December 2025 Omnicom Group has a market cap of โน2.298 Trillion. This makes Omnicom Group the world's 914th 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 12th, 2025 the market cap of Omnicom Group was reported to be: