Marty Stock, CEO of WPP's Calvary, is taking on a dual role as chief executive of Y&R Chicago, according to people familiar with the matter.
Representatives from Cavalry and Y&R were not immediately available for comment.
Cavalry, which was created in mid-2012 to handle creative and digital for Coors Light, Coors Banquet and any other new products, lost the MillerCoors business last August. At the time, Mr. Stock told Ad Age that the shop was "incredibly disappointed that a relationship that goes back three decades with so many successful brands has come to an end. Regime change is a fact of life in this business. We wish MillerCoors well wherever they go next."
Despite the loss, Cavalry has done project work for other clients, such as PepsiCo and Tyson Foods. According to people familiar with the matter, Mr. Stock will now lead about 100 staffers in Chicago across Cavalry and Y&R.
When Mr. Fraser joined Y&R last spring, he said his first priorities for the shop, which has been quiet on the new business front in recent months, were "to build something special" and focus on organic client growth. He joined the agency shortly after Y&R Chicago Chief Creative Officer Bill Cimino stepped down.