Omnicom acquiring Interpublic Group to create global ad behemoth, impacting industry landscape with cost savings and client shake-ups.

Financial analyst discusses risky Omnicom and Interpublic merger with potential dis-synergies, talent conflicts, and stagnant revenue, making shares a hold.

The deal of the decade redefines revenue dynamics, global markets, and service mix. Omnicom’s acquisition of Interpublic Group is on track to create the world’s largest agency group by total revenue, making a big splash this week after the proposed deal was kept mostly under wraps.

If successful, the merger would bring together the agencies behind Apple, McDonald’s, Pepsi, Geico, and more—resulting in the world’s largest ad company. Omnicom Group has agreed to acquire Interpublic Group,

Omnicom Group Inc. announced it will acquire The Interpublic Group of Companies Inc. in a stock-for-stock deal to form the world's largest advertising agency, with nearly $26 billion in annual revenue.