O
Omnicom Group
New York, NY, United States · Founded 1986
10001+ employees · OMC
Sourced & current · updated Jun 6, 2026Website
Omnicom Group is one of the world's largest advertising and marketing communications holding companies, operating a portfolio of leading agency brands across creative, media, PR, and specialty marketing services.
Where they sit
Stack tier: Core Platforms (S)
Marketing AnalyticsMarketing AgencyProgrammatic Platform
One of the 'Big Four' global advertising holding companies, competing with WPP, Publicis Groupe, and Interpublic Group for the world's largest marketing budgets.
Ownership
Subsidiaries