As of November 2026 Omnicom Group has a market cap of HK$181.66 Billion. This makes Omnicom Group the world's 1015th 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 Oct 31st, 2026 the market cap of Omnicom Group was reported to be: