The Nasdaq composite trimmed a larger gain to around 0.1% in recent action. The S&P 500 floundered, rising less than 0.1% after falling 0.8% on Monday. Small-caps still outpaced the market, with the Russell 2000 index climbing 1%. The Russell ended a six-day winning streak Monday.

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