Chevron's ( CVX ) 2.8% drop led the components on the Dow Jones Industrial Average broadly lower. Despite Monday's rebound that was ignited by dovish comments from Federal Reserve Governor Lael Brainard, the downward path was back on as investors braced for next week's pivotal Federal Open Market Committee meeting, preceded by key economic data on inflation, retail sales and manufacturing later this week. Only Apple ( AAPL ) managed gains among the blue chips on news from T-Mobile US ( TMUS ) and Sprint ( S ) that pre-orders for the latest iPhones were soaring.