Publicis Media dominated the
major agency holding companies’ in media billings gains during 2017, taking a 17.8% share of the market, followed by WPP’s GroupM (15.2%), Omnicom Media Group (13.9%), IPG Mediabrands
(8.1%), Dentsu Aegis Network (6.8%) and Havas Media (1.4%). But the real winner was all others, which accounted …
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