U.S. stocks fell sharply after reports showed that worries among consumers and businesses about President Donald Trump’s policies may be hitting the economy.

Shake Shack named a new CEO on Thursday, the first outsider to lead the company in its 20-year history.

Joe Raedle/Getty Images(CNN) - For the first time in two years, Papa John's is growing in the United States. Three executives, Chief Operating and Growth Officer Mike Nettles, Chief Marketing Officer Karlin Linhardt and Chief Financial Officer Joe Smith, are all departing the company. To distance itself from the controversial founder, Papa John's has updated its marketing campaign, conducted an internal audit into the company's culture and ran mandatory anti-bias training for employees. As Papa John's slowly returns to growth in the United States, competition in the pizza sector is heating up. Its new partnership with the NFL, which replaced Papa John's, helped boost its bottom line.

Lynch was named CEO of Papa John's Tuesday morning. He replaces Steve Ritchie, the veteran Papa John's executive who took over in the wake of the scandal surrounding founder and former CEO John Schnatter. Starboard CEO Jeffrey Smith took over as Papa John's chairman. "I am thrilled to welcome Rob to Papa John's at this pivotal moment in the company's history," Smith said in a statement. Shares of Papa John's, which rallied on the news of Lynch's hiring, are up more than 10% this year.