Publicis And Omnicom Become World's Biggest Advertising Company

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John Wren, chief executive officer of Omnicom Group Inc., pauses... News PhotoAdvertisement,Business,CEO,Commercial Activity,Corporate Business,Europe,Finance,France,French Culture,Headquarters,John Wren,Mergers and Acquisitions,Paris - France,Press Conference,VerticalPhotographer Collection: Bloomberg 2013 BloombergJohn Wren, chief executive officer of Omnicom Group Inc., pauses during a news conference at the Publicis headquarters in Paris, France, on Sunday, July 28, 2013. Publicis Groupe SA and Omnicom Group Inc. agreed to merge in an all-stock transaction to create the world's largest advertising company with $23 billion in revenue, toppling market leader WPP Plc. Photographer: Balint Porneczi/Bloomberg via Getty Images