多只热门中概股跌逾4%，美股三大指数齐跌，黄金白银跳水

Group 1: Technology Sector - Major technology stocks showed mixed performance, with the Wande American Technology Seven Giants Index declining by 0.51%. Amazon fell nearly 2%, Apple dropped over 1%, Tesla decreased by 0.82%, and Nvidia fell by 0.49%. In contrast, Facebook rose by 0.02%, Google increased by 0.49%, and Microsoft gained 0.56% [1] - Tesla reported third-quarter revenue of $28.1 billion, exceeding the estimate of $26.36 billion. The operating profit for the third quarter was $1.62 billion, slightly below the forecast of $1.65 billion, with a gross margin of 18.0%. The first production line for Optimus is being installed in preparation for mass production [1] Group 2: Banking Sector - Bank stocks experienced a broad decline, with JPMorgan falling over 1%, Goldman Sachs dropping nearly 2%, Citigroup decreasing by nearly 2%, Morgan Stanley down by 0.7%, Bank of America falling by 0.83%, and Wells Fargo declining by over 1% [2] Group 3: Energy Sector - Energy stocks collectively rose, with ExxonMobil increasing by nearly 2%, Chevron rising by over 1%, ConocoPhillips up by more than 1%, Schlumberger gaining over 4%, and Occidental Petroleum increasing by over 2% [3] Group 4: Airline Sector - Airline stocks saw a general decline, with Boeing down by 0.3%, American Airlines falling by over 2%, Delta Airlines decreasing by over 3%, Southwest Airlines down by over 2%, and United Airlines declining by nearly 4% [4] Group 5: Semiconductor Sector - Semiconductor stocks mostly declined, with the Philadelphia Semiconductor Index dropping by 2.36%. ON Semiconductor fell by over 5%, Texas Instruments decreased by over 5%, Microchip Technology dropped by over 4%, Marvell Technology fell by over 3%, and AMD decreased by over 3% [5] Group 6: Precious Metals - Gold and silver prices plummeted, with spot gold falling below $4,090 per ounce, previously nearing a low of $4,003. The market's risk appetite increased, leading to a decline in gold prices, which had previously seen a significant rise this year, with a cumulative increase of around 57% [6] - The global trend indicates a potential shift towards gold as a primary reserve asset, with gold's total market value surpassing $27 trillion, making it the second-largest reserve asset globally [7] - Domestic gold jewelry prices also saw significant reductions, with major brands reporting declines in their gold prices per gram [7]