The US stock market opened, with the Dow Jones Industrial Average nearly flat, the SP 500 Index up 0.02%, and the Nasdaq Composite up 0.1%. Tesla (TSLA.O) rose more than 1% at the opening, as "Cathie Wood" had been increasing her holdings for two consecutive days. iRobot (IBRT.N) fell more than 17% after Amazon (AMZN.O) announced the termination of its acquisition of iRobot.