Verizon Communications Inc. signage is displayed on a monitor on the floor the New York Stock Exchange (NYSE) in New York, U.S., on Monday, June 20, 2016. U.S. stocks surged, with the S&P 500 Index jumping the most in four weeks, after the latest polls showed the U.K. campaign to remain in the European Union is gaining ground before Thursday's referendum. Photographer: Michael Nagle/Bloomberg via Getty Images