Wall Street took the postponement of the U.S.-China tariff deadline in stride and refocused on inflation numbers arriving Tuesday that may play an outsized roll in the decision by the Federal Reserve about weather to cut rates,

Wall Street's main indexes ended lower on Monday as investors anxiously await inflation data this week to assess the outlook for interest rates and eye U.S.-China trade developments.

Megacap technology stocks and financial names were fueling a strong post-CPI rally in the U.S. stock market on Tuesday. The S&P 500's communication-services and information-technology sectors were among the top performers among the large-cap index's 11 sectors,