Ge Long Hui A P P·2026-01-29 23:57Group 1 - Microsoft experienced a significant stock sell-off, with shares dropping nearly 10% to $433.5, resulting in a market value loss of $357 billion, marking the second-largest single-day market value decline in stock market history [1] - The company's record spending on artificial intelligence (AI) was highlighted in its earnings report, while growth in its core cloud business showed signs of slowing down [1] - The only larger single-day market value loss in history was recorded by Nvidia last year, which saw a $593 billion drop following the launch of a low-cost AI model [1] Group 2 - The market value fluctuation of Microsoft exceeded that of over 90% of the S&P 500 index constituents [1] - Other technology stocks, including Alphabet and Nvidia, also faced significant market value losses, each evaporating over $100 billion on the same day [1]