FAP, June 16 (Xinhua)-- the three major indexes of US stocks collectively opened higher, with the Dow rising 0.46%, the Nasdaq up 0.55%, and the S & P 500 up 0.51%. Virgin Galactic rose more than 40% after it announced plans to start commercial space flights from June 27 to 30. IRobot rose more than 18 per cent, and Amazon's acquisition of iRobot was approved by UK regulators. Adobe rose by more than 5%. The performance of Q2 exceeded expectations, the demand for generative artificial intelligence was strong, and the annual profit guidance was raised.