A day after losing the $3.6 billion General Motors media account, Interpublic Group of Cos. on Thursday named former MTV Networks President and Chief Operating Officer Mark Rosenthal CEO of the group’s media operations.

Mr. Rosenthal will be based in New York and will oversee Interpublic’s worldwide media operations, including Initiative, Magna Global, Universal and a number of specialist media agencies. He will also work directly with Interpublic Chairman and CEO Michael Roth on a strategy that “aligns all of the holding company’s media assets and maximizes the benefits they — working together with other Interpublic assets in areas such as sports, entertainment and event marketing — deliver to clients,” the company said.