Last year, Omnicom Group Inc generated 10.02B USD for its biggest-performing segment, Advertising. The North America made the largest contribution, accounting for 9.59B USD last year. For the latest quarter, Omnicom Group Inc reported the revenue of 3.26B USD for the period ending 2026-06-30, which came from the top-performing segment, CRM Precision Marketing. North America contributed the highest revenue, at 3.99B USD.