The ‘Big Six’ marcoms holdcos (WPP, Publicis, Omnicom, IPG, Dentsu and Havas) have experienced vastly different fortunes in recent months and years, w
The ‘Big Six’ marcoms holdcos (WPP, Publicis, Omnicom, IPG, Dentsu and Havas) have experienced vastly different fortunes in recent months and years, w