Billings in the region went up 19% from a year earlier.
W&K had 14 wins and almost $300m in estimated billings in January-February – the highest of any creative or media agency.
Top-placed OMD registered 37 wins in January-February media table.
WPP and Havas were top buyers last year.
Despite an overall drop in the region’s new business, Omnicom generated $100 million more in billings compared with previous month.
Sister shop Leo Burnett ends year in second place in creative table.
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