United Airlines flew 12.4% higher after reporting a milder drop in summer profit than expected and announcing plans to send up to $1.5 billion to its shareholders by buying back its stock. J.B. Hunt Transport Services motored up by 3.1% after the freight company delivered better-than-expected results.

Nvidia stock was falling Tuesday. The chip maker may face more limitations on exports of its advanced artificial intelligence chips. U.S. government officials have discussed capping sales of advanced AI chips from the U.

China shares fell as investors digested much weaker-than-expected export data released late Monday. Japan's market jumped as its semiconductor firms followed Nvidia upward.

Shares of Nvidia fell over 4% on Tuesday morning a day after after closing at a record high. The chipmaker’s stock was down less than 1% in pre-market trading, but fell by aroun