U.S. stocks opened lower, with the Dow Jones Industrial Average down 0.45%, the S&P 500 down 0.5%, and the Nasdaq Composite down 1.35%. Alphabet (GOOG.O) plunged 11.7%, dragging down AI software stocks, as its Q3 revenue missed expectations and cash burn intensified. Microsoft (MSFT.O) rose 0.5%, reporting much better-than-expected cash flow and forecasting strong growth in its cloud business. Storage stocks collectively declined, influenced by Samsung Electronics' earnings, with Micron Technology (MU.O) falling 1.8%.