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, with investors concerned about geopolitical tensions and trade policy uncertainties, leading to a surge in market volatility as indicated by the CBOE Volatility Index (VIX) reaching its highest level since mid-June [3] - The Dow Jones Industrial Average fell by 878.82 points, closing at 45479.60, a drop of 1.9%; the S&P 500 decreased by 182.6 points to 6552.51, down 2.71%; and the Nasdaq Composite dropped by 820.2 points to 22204.43, a decline of 3.56%, marking the largest single-day drop for both the S&P 500 and Nasdaq since April [3] Weekly Performance - For the week, the S&P 500 index fell by 2.43%, the Dow Jones Industrial Average decreased by 2.73%, and the Nasdaq dropped by 2.53% [4] - 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% [4] Sector Performance - The semiconductor sector led the declines, with the Philadelphia Semiconductor Index dropping by 6.3% [5] - Chinese concept stocks faced pressure, with the Nasdaq Golden Dragon China Index falling by 6.1%. Notable declines included 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%, and Bilibili down over 9% [5] Bond Market - In the bond market, the yield on the 10-year U.S. Treasury fell by 9.1 basis points to 4.057%, the lowest in over a month; the 2-year Treasury yield decreased by 7.5 basis points to 3.512% [5] Economic Indicators - Analysts noted that the market's short-term volatility reflects increased uncertainty regarding macroeconomic and policy outlooks, particularly in the context of a temporary halt in official economic data [6] - The University of Michigan's preliminary consumer confidence index for October remains at historically low levels, with inflation and employment outlooks continuing to suppress consumer sentiment [6] - Several 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 [6] 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, while Brent crude oil futures dropped by 3.82% to $62.73 per barrel [6] - In contrast, COMEX gold futures rose by 0.70%, closing at $4000.40 per ounce, supported by safe-haven buying [7]