The Nasdaq composite held up the best among the major indexes, but wavered and was up just 0.2% in recent trades. The S&P 500 also wavered and edged into positive ground after falling 0.8% Monday.

World shares are mostly higher, with financial markets shrugging off U.S. tariff pressures on its trading partners.

Investors are digesting Trump's stiff tariffs on imports from more than a dozen countries and delayed the return of sweeping ...