In what remains a gloomy cross-border deal market, US leaders Latham & Watkins and Wachtell Lipton Rosen & Katz have secured lead roles on the largest public merger of the year so far – the tie-up of Omnicom and Publicis Groupe. The Franco-US union creates a company with a combined market capitalisation of €26.5bn, forging the largest advertising group in the world. The combined company, which will be listed in New York and Paris, will have more than 130,000 staff.
The deal is likely to attract the attention of antitrust regulators in the US and Europe, uniting the second and third largest advertising groups in the world to overtake the UK-based WPP.









