U.S. stocks remained lower in the final hour of trading on Tuesday as tariff jitters and caution ahead of the Federal Reserve's interest-rate decision put Wall Street's record-setting rally on pause.

The Dow, S&P 500, and Nasdaq are slipping as the stock market braces for the Fed's latest rate decision, Big Tech earnings, and the results of President Donald Trump's trade talks with China.

UnitedHealth shares traded flat Monday as investors stayed cautious ahead of the company’s second-quarter earnings report due Tuesday, according to Benzinga. Analysts expect earnings per share of ...