U.S. stocks opened lower, with the Dow Jones Industrial Average down 0.44%, the S&P 500 down 0.67%, and the Nasdaq Composite down 1.1%. Popular tech stocks were mixed, with Micron Technology (MU.O) down 6%, SpaceX (SPCX.O) down 1.8%, and Apple (AAPL.O) up 0.1%.