Maurice Levy, chief executive officer of Publicis, has blamed the group’s poor performance on the hangover from Publicis’ failed “merger of equals” with world number two agency Omnicom. Photograph: Gonzalo Fuentes

Publicis, the world’s third-largest advertising agency, has agreed to buy digital ad specialist Sapient for $3.7 billion in cash as it seeks to accele(...)

Publicis chief executive Maurice Levy said the strong euro was also to blame for chipping away at the group’s growth. Photograph: Chris Ratcliffe/Bloomberg

French advertising group Publicis has warned it would be “very difficult” to meet its sales growth target this year after a second-quarter slowdown, c(...)

Maurice Levy (left), Publicis chief executive, and John Wren, head of Omnicom Group react after signing the merger documents in Paris

For years, the advertising business has been spurred by the Madison Avenue mythology of small independent shops coming up with the snappy catchphrase (...)

Maurice Levy, chief executive officer of Publicis Groupe SA and John Wren, chief executive officer of Omnicom Group Inc., shake hands after signing the merger deal in Paris yesterday.

Publicis and Omnicom have confirmed plans for a merger of equals that would create the world’s largest advertising and marketing services group by (...)

Publicis chief executive  Maurice Levy and Omnicom chief executive John Wren  shake hands yesterday after signing the companies’ merger,  on the rooftop of the Publicis headquarters in Paris. Photographer: Balint Porneczi/Bloomberg

The merger between Publicis and Omnicom, which will create the world’s largest advertising and marketing services group by revenues, is a bold bet tha(...)