The three major U.S. stock indexes opened higher collectively, with the Dow Jones up 0.63%, the Nasdaq up 0.87%, and the S&P 500 index up 0.68%. Chip stocks are generally up, with Arm Holdings up more than 4%, Asml Holding and Nvidia up more than 3%, Qualcomm and Taiwan Semiconductor up nearly 2%. 3M was up more than 9%, Q2 performance exceeded expectations, and the company raised its full-year profit guidance. Dexcom fell more than 38%, and the company lowered its full-year revenue and gross margin expectations.