"Market Volatility Ahead: Fed Meeting and Disappointing Chinese Factory Data Take Center Stage"

U.S. stock futures were mixed as investors awaited the Federal Reserve's policy decision later in the week and digested disappointing Chinese manufacturing data. The Fed's two-day meeting is expected to be the highlight of a busy week that includes corporate earnings and key economic data. Caterpillar and Pfizer are set to report their quarterly earnings, while Chinese factory activity contracted in October, dampening hopes for an economic rebound. Oil prices rebounded after a sharp fall, but concerns about slowing fuel demand in China persisted.