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.

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

Omnicom Group will acquire Interpublic Group, the companies confirmed, in a deal that will create the world’s largest advertising business. Under the all-stock deal, Omnicom would exchange 0.344 shares for each Interpublic share,

Omnicom is acquiring Interpublic in an all-stock deal that will reshape the advertising and marketing sectors, creating the world's largest ad firm.

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,