All Brands Owned by Omnicom Group Inc.

What does Omnicom own?
The company owns agency networks including BBDO, DDB, TBWA, McCann, FCB, OMD, PHD, Hearts & Science, UM, Initiative, FleishmanHillard, Weber Shandwick, Ketchum, Porter Novelli, plus Acxiom, Flywheel Digital, Annalect, and Interbrand.

Is Omnicom publicly traded?
Yes. It trades on the New York Stock Exchange under ticker OMC and is an S&P 500 component.

Did Omnicom buy Interpublic?
Yes. The acquisition closed November 26, 2025. IPG shareholders received 0.344 Omnicom shares per IPG share, creating a combined company with over $25 billion in pro forma revenue.

Who founded Omnicom?
Omnicom was formed in 1986 through the merger of three agency groups: BBDO International, Doyle Dane Bernbach, and Needham Harper Worldwide.

Where is Omnicom headquartered?
The company is headquartered in New York City, New York.

Who runs Omnicom?
John Wren serves as chairman and CEO. Philippe Krakowsky and Daryl Simm serve as co-presidents and co-COOs, and Phil Angelastro is EVP and CFO.

How big is the combined Omnicom?
Post-merger the company has pro forma revenue exceeding $25 billion and more than 100,000 employees, making it the world's largest marketing and sales company.