Omnicom

Omnicom Group (NYSE: OMC) is a global advertising and marketing holding company comprising over 1,000 agencies — including BBDO, DDB, TBWA, OMD, and PHD — serving more than 5,000 clients across 100 countries. It provides advertising, media buying, CRM, and PR services at scale. Omnicom reported approximately $14.7 billion in revenue for 2024 and announced a merger with Interpublic Group that, if completed, would create the largest advertising holding company in the world by revenue, ahead of WPP and Publicis. For fashion clients, Omnicom's media buying operations — primarily through OMD and PHD — determine how significant portions of retail advertising budgets are allocated across paid search, social, and programmatic channels, giving the group outsized influence over digital shelf visibility for brands that do not operate independent media functions.

First mentioned: April 2026