美股三大股指集体低开，纳指跌1.38%，亚马逊大跌超7%

Group 1 - The core market trend shows that all three major US stock indices opened lower, with the Dow Jones down 0.84%, the Nasdaq down 1.38%, and the S&P 500 down 0.95% [1] - Apple reported a significant revenue increase in its Q3 FY2025 earnings, surpassing Wall Street expectations, leading to a stock price increase of 1.6% [1] - Amazon's stock fell over 7.3% due to its second-quarter cloud business (AWS) growth lagging behind competitors Microsoft and Google [1]