突然爆雷！美银行股，全线大跌！

Group 1: Market Performance - U.S. bank stocks experienced a significant decline, with the regional bank index dropping by 6.2% [1][2] - Major U.S. indices closed lower, with the Dow Jones down 0.65%, Nasdaq down 0.47%, and S&P 500 down 0.63% [1] - The Nasdaq Golden Dragon Index, which tracks Chinese stocks, fell by 0.91% [1] Group 2: Regional Bank Concerns - Recent fraud allegations against two U.S. regional banks raised concerns about credit quality and asset transparency, leading to a 6.2% drop in the regional bank index and a 3.6% decline in the Philadelphia Bank Index [2] - Zions Bancorp's stock fell by 13.14% after reporting a $50 million impairment related to loans totaling over $60 million [2] - Western Alliance's stock dropped by 10.8% following a fraud lawsuit against a borrower [2] Group 3: Broader Market Impact - The concerns surrounding regional banks negatively impacted the overall market, erasing earlier gains in the S&P 500 [3] - Chinese concept stocks also saw declines, with notable drops including Xunlei and New Oriental falling over 5% [3] Group 4: Gold Prices Surge - Increased concerns over credit quality and trade tensions have driven up demand for safe-haven assets, resulting in gold prices reaching new highs [4] - On October 17, COMEX gold prices briefly surpassed $4,390 per ounce, while silver prices reached $53.765 per ounce [4] - Research indicates that gold prices may continue to rise due to factors such as inflation and market volatility [4]