U.S. stocks opened lower, with the Dow Jones Industrial Average down 0.15%, the S&P 500 down 0.25%, and the Nasdaq Composite down 0.36%. Meta Platforms (META.O) rose more than 5% after launching its personal AI assistant, Muse. Amazon (AMZN.O) fell 1.2% after issuing its first four-part sterling bond. Apple (AAPL.O) dipped slightly by 0.2% ahead of its major product launch event.