道指暴泻近900点，科技、中概板块重挫

Market Overview - The U.S. stock market experienced a significant decline on Friday, driven by renewed investor concerns over geopolitical tensions and trade policy uncertainties, with the technology sector leading the drop [1] - The CBOE Volatility Index (VIX) surged to its highest level since mid-June, indicating a sharp increase in market fear [1] Index Performance - The Dow Jones Industrial Average fell by 878.82 points, closing at 45479.60, a decrease of 1.9% - The S&P 500 index dropped by 182.6 points, ending at 6552.51, down 2.71% - The Nasdaq Composite Index declined by 820.2 points, closing at 22204.43, a drop of 3.56% - Both the S&P 500 and Nasdaq recorded their largest single-day declines since April [1] Weekly Performance - For the week, the S&P 500 index decreased by 2.43%, the Dow Jones Industrial Average fell by 2.73%, and the Nasdaq dropped by 2.53% [2] - Major technology stocks saw significant declines, with Broadcom down 5.9%, Tesla down 5.1%, Amazon down approximately 5%, Nvidia down 4.9%, Meta down 3.9%, Apple down 3.45%, Microsoft down 2.2%, and Alphabet down 1.95% [2] Sector Performance - The semiconductor sector was notably weak, with the Philadelphia Semiconductor Index dropping by 6.3% [3] - Chinese stocks listed in the U.S. faced pressure, with the Nasdaq Golden Dragon China Index declining by 6.1%, including Alibaba down over 8%, Pinduoduo down over 5%, JD.com down over 6%, Baidu down over 8%, Li Auto down over 3%, NIO down over 10%, Xpeng down over 8%, Bilibili down over 9%, and Futu Holdings down over 11% [3] Bond Market - In the bond market, the yield on the 10-year U.S. Treasury note fell by 9.1 basis points to 4.057%, the lowest in over a month, while the yield on the 2-year note decreased by 7.5 basis points to 3.512% [3] Economic Indicators - The University of Michigan's preliminary consumer sentiment index for October remained at historically low levels, with inflation and employment outlooks continuing to suppress consumer willingness to spend [3] - Federal Reserve officials indicated that future monetary policy adjustments should proceed with a "cautious and gradual" approach, with potential rate adjustments of 25 basis points [3] Commodity Market - The commodity market saw increased volatility, with international oil prices significantly declining; WTI crude oil futures fell by 4.24% to $58.90 per barrel, and Brent crude oil futures dropped by 3.82% to $62.73 per barrel [4] - In contrast, COMEX gold futures rose by 0.70%, closing at $4000.4 per ounce, supported by safe-haven buying [5]