Interpublic Group
MergedNew York, New York, United States · Founded 1961
10001+ employees · IPG
Interpublic Group (IPG) is one of the world's largest advertising and marketing services holding companies, housing a global network of creative, media, data, and PR agencies.
Where they sit
Stack tier: Ecosystem Services (A)
Marketing AnalyticsMarketing AgencyProgrammatic Platform
Formerly one of the four largest global advertising holding companies; now a wholly-owned subsidiary of Omnicom Group following the November 2025 merger close, forming the world's largest advertising group.
Ownership
Parent: Omnicom Group