Omnicom is taking over the Interpublic group to create the world's largest advertising business. John Wren will remain CEO of Omnicom, while his counterpart Philippe Krakowsky will be Interpublic's COO. AdvertisementOmnicom is taking over the Interpublic group in a deal expected to create the world's biggest advertising and marketing business. Omnicom shareholders will own 60.6% of the combined group. AdvertisementWren will remain CEO of Omnicom, while Krakowsky and Daryl Simm will be copresidents and COOs of Omnicom.

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Persons: Omnicom, John Wren, Philippe Krakowsky, Interpublic, Daryl Simm Organizations: WPP, France's Locations: London, COOs, Omnicom