Omnicom Group

One of the top three global advertising holding companies by revenue, competing with WPP and Publicis Groupe for the largest share of global ad spend management

Omnicom Group is a leading global advertising and marketing communications holding company headquartered in New York City. Founded in 1986 through the merger of BBDO Worldwide, DDB Needham, and TBWA, Omnicom operates a vast network of agencies spanning creative advertising, media planning and buying, public relations, healthcare marketing, CRM, and specialty communications. Its major agency networks include BBDO, DDB, TBWA, OMD, PHD, FleishmanHillard, Ketchum, and Porter Novelli, among hundreds of others. Omnicom serves a broad range of Fortune 500 and global multinational clients, providing integrated marketing solutions across traditional and digital channels. The company has made significant investments in data and technology capabilities, including its Omni data and insights platform, which enables audience targeting, analytics, and cross-channel campaign orchestration. Its Omnicom Media Group (OMG) division is one of the largest media buying and planning operations in the world. In the AdTech and MarTech ecosystem, Omnicom competes directly with WPP, Publicis Groupe, IPG, and Dentsu. The company has pursued a strategy of acquiring and integrating specialized digital, data, and technology agencies to stay competitive in an increasingly programmatic and data-driven advertising landscape. Omnicom's pending acquisition of Interpublic Group (IPG), announced in late 2024, would create the world's largest advertising holding company if completed.