Martin Sorrell, CEO of advertising and PR conglomerate WPP (Hill & Knowlton, Burson-Marsteller, Ogilvy), said the U.S. led a positive swing in the first quarter as he discussed the company's recent earnings and other issues in an interview with CNBC on April 30.
"The biggest change in the last 90 days has been the change in the United States," he said.
"We've gone from minus-five in terms of the top line to plus-four," he said, noting the percentages of loss and gains at WPP equate to a nine-percent swing for the region, which accounts for one-third of the company's revenue.
Sorrell sees Western Europe as a continued "slog" and the U.K. market after the election as "a concern" as well.
He also chimes in on the U.K. election and what he sees as the source of WPP's growth over the next five years.