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. Investors expect the recent shakeup at the U.

Inflation data, trade talks and earnings—it’s shaping up to be a busy week for markets, being approached with cautious optimism as futures were gaining ahead of the opening on Monday . Dow Jones Industrial Average futures were up 89 points,