- Campaign, Monday, April 15, 2019 7:57 AM
The position of the top six holding companies have remained unchanged in 2018, compared to 2017, the latest table from Campaign shows. WPP's 1% growth is enough to keep it way out in the lead while
the remaining groups making up the top four have shown declines in the last year, most notably in fourth spot, Dentsu Aegis' revenue is down 9.2%.
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