Nvidia’s Run Toward $4 Trillion Fuels Stock Gains

A big day for Nvidia shares helped power a fresh all-time high for the Nasdaq composite on Wednesday, despite new tariff threats from the Trump administration. All three major U.S. indexes posted gains after President Trump released new letters setting levies on goods from a half-dozen countries including the Philippines, Libya and Iraq. Wednesday was the original deadline for reaching trade deals with Washington, before Trump extended it to Aug. 1, and many investors have begun wagering the White House won’t ultimately follow through on its harshest threats.