ReportMarketing Effectiveness & Data
Global media agency billings 2025 — BAZ analysis
BAZ Research — analysis of COMvergence 2025 dataOct 9, 2026 9 min
BAZ analysis of COMvergence 2025 figures: WPP Media leads at 13% share, Publicis the fastest grower.
BAZ analysis of public COMvergence data. Big-6 holdcos managed $265B in 2025 (+1.7%). OMD is the #1 network ($26.9B). Horizon Media is the largest independent ($7.4B, 23% of independent billings). Digital = 57% of global billings. Publicis won $10B new business — a third of all spend that shifted. Implications for the BAZ Media engine.