M
MDC Partners
RebrandedNew York City, New York, United States · Founded 1980
10001+ employees · MDCA
Sourced & current · updated Oct 23, 2026
MDC Partners, now operating as Stagwell Inc., was an advertising and marketing holding company based in New York City that operated through a partnership model, acquiring majority stakes in its partner agencies while leaving a share of ownership with the founders.
Where they sit
Stack tier: Ecosystem Services (A)
Marketing Agency
Formerly a top independent marketing holding company; now integrated into Stagwell Inc. as a top 10 global marketing services group
Ownership
Parent: Stagwell Inc.