关税突发，美国宣布：对特定半导体等加征25%关税！特朗普称将“观望”伊朗局势发展，国际油价大幅震荡！纳指收跌1%，美联储重磅报告发布

Market Performance - The US stock market indices experienced a decline for the second consecutive trading day, with the Dow Jones down 0.09% at 49,149.63 points, the Nasdaq down 1% at 23,471.75 points, and the S&P 500 down 0.53% at 6,926.60 points [1] - Major technology stocks fell, including Google A down 0.04%, Apple down 0.42%, Nvidia down 1.44%, Tesla down 1.79%, Microsoft down 2.4%, Amazon down 2.45%, and Meta down 2.47% [2] - Bank stocks also declined, with Wells Fargo down over 4%, Citigroup and Bank of America down over 3%, Morgan Stanley down over 1%, JPMorgan down nearly 1%, and Goldman Sachs down 0.58% [2] Sector Performance - Airline stocks saw a general decline, with Boeing down 0.81%, American Airlines, Delta Airlines, and Southwest Airlines down over 1%, and United Airlines down over 3% [3] - Semiconductor stocks had mixed results, with Broadcom down over 4%, ARM, Lam Research, and Marvell Technology down over 2%, while Intel rose over 3% and AMD increased over 1% [3] - Energy stocks collectively rose, with ConocoPhillips up over 4%, and ExxonMobil, Chevron, Schlumberger, and Occidental Petroleum up over 2% [3] Chinese Stocks - The Nasdaq Golden Dragon China Index fell 0.23%, with Ctrip down over 17%, Pinduoduo down nearly 4%, and several electric vehicle manufacturers down over 2% [3] - Notable movements included Bilibili up over 6% and Weibo up 1% [3] Commodity Prices - Gold and silver prices reached new highs, with COMEX gold futures up $34.80, a 0.76% increase, at $4,633.90 per ounce, and COMEX silver futures up $6.847, a 7.93% increase, at $93.815 per ounce [5] - Spot silver rose $6.26, a 7.20% increase, at $93.19 per ounce [5] Economic Indicators - The Federal Reserve's Beige Book indicated that economic activity grew at a slight to moderate pace in 8 out of 12 districts, with consumer spending showing slight to moderate growth attributed to the holiday shopping season [9] - Most regions reported stable employment conditions, with 8 districts noting no changes in hiring activity [9]