Omnicom Group is acquiring Interpublic Group in a roughly $13B deal that would create the world's largest advertising agency valued at more than $30B. The companies are behind iconic marketing campaigns like “Got Milk” for the California Milk Processor Board, “Because I’m Worth It” for L’Oreal, and “Think Different” for Apple.
Under the terms of the stock-for-stock transaction, Omnicom shareholders will own 60.6% of the combined company, while Interpublic shareholders will own 39.4%. The combined entity will operate under the Omnicom name and trade under the OMC ticker symbol on the New York Stock Exchange. The deal is expected to have an annual cost savings of $750M and is set to close in the second half of 2025.
Omnicom is the third-largest advertising holding company globally by revenue, generating roughly $15B in 2023, while Interpublic follows with roughly $11B. Combined, the two agencies will surpass current industry leaders: UK-based WPP, which reported approximately $18B in revenue in 2023, and Paris-based Publicis Groupe, which reported nearly $16B in revenue.
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