The U.S. stock market opened with the Dow Jones Industrial Average up 0.36%, the S&P 500 Index up 0.4%, and the Nasdaq up 0.3%. SanDisk (SNDK.O) fell 2.7%, and Western Digital (WDC.O) dropped 6%, as the market deemed the performance guidance of both companies unimpressive. Exxon Mobil (XOM.N) and Chevron (CVX.N) declined by 1.1% and 1.2%, respectively. Apple (AAPL.O) rose 2.7%.