U.S. stocks opened, with the Dow Jones falling 0.9%, the S&P 500 index falling 1.2%, and the Nasdaq falling 1.7%. NIO.N fell 3% after earnings. Major tech stocks fell broadly, with NVDA.O falling 2.6%, TSM.N falling 2%, and TSL.O falling 1.9%. PEP.O rose 5%, as Elliott plans to take action to boost its stock price.