Stagwell Inc.

New York, NY, United States · Founded 2015

10001+ employees · STGW

Sourced & current · updated Oct 27, 2026Website

Stagwell Inc. is a global marketing and communications group founded in 2015 by Mark Penn, initially backed by a $250 million investment from former Microsoft CEO Steve Ballmer.

Where they sit

Stack tier: Ecosystem Services (A)

AI-Powered PlatformMarketing CloudMarketing Technology

Challenger holding company to the Big Six (WPP, Publicis, Omnicom, IPG, Dentsu, Havas), differentiated by proprietary marketing technology and a modern agency network