Shares were mixed in thin Asian trading on Monday after U.S. stocks edged back from their all-time high. Oil prices fell and U.S. futures sank, while Chinese shares shed some of their early gains after a survey of manufacturers showed export orders dropping to a five-month low.

Rebounding tech stocks drove U.S. indexes higher Tuesday, a day after they tumbled on doubts about whether the artificial-intelligence frenzy really needs all the dollars being poured into it. The S&P 500 climbed 0.