NVIDIA's stock fell over 4%, losing its title as the most valuable company amid U.S. export control concerns on China.

Dow, S&P 500, and Nasdaq futures are falling in premarket trading Tuesday as the stock market reacts to President-elect Donald Trump saying he would impose steep tariffs on Mexico, Canada, and China.

President-elect Donald Trump on Monday pledged tariffs on the United States' three largest trading partners - Canada, Mexico ...