A merger to create the world's largest advertising company is essentially done between Omnicom...

|About: Omnicom Group Inc. (OMC)|By:, SA News Editor

A merger to create the world's largest advertising company is essentially done between Omnicom (OMC) and Publicis Groupe (PUBGY.OB), according to various reports. The combined $30B company would be a merger of equals, however, with no premium to current share prices -- though size should allow it to negotiate better ad rates and retain clients more easily.