美股三大指数集体收涨，存储芯片股狂飙、闪迪涨超27%，黄金站上4500美元，现货白银突破82美元、开年以来上涨15%

Market Performance - The US stock market experienced a strong rally, with the Dow Jones Industrial Average and S&P 500 both reaching record closing highs. The Dow surpassed 49,000 points for the first time, closing at 49,462.08, up 0.99%. The S&P 500 closed at 6,944.82, up 0.62%, while the Nasdaq Composite rose to 23,547.17, gaining 0.65% [1][2]. Sector Performance - The primary driver of this rally was the semiconductor and storage sectors, fueled by renewed optimism surrounding artificial intelligence (AI). Notable stock performances included SanDisk, which surged over 27%, and Micron Technology, which rose 10%, pushing its market cap above $380 billion. Western Digital and Seagate also saw significant gains of over 16% and 14%, respectively [2][4]. Technology Giants - Among major tech companies, Amazon led the gains with an increase of over 3%, followed by Microsoft with a rise of over 1%. However, Tesla faced a sharp decline of 4.14% due to market interpretations of its new low-interest car financing plan as a price cut. Apple also fell nearly 2%, while Nvidia saw a slight decrease of 0.45% [6][7]. Semiconductor Index - The Philadelphia Semiconductor Index rose by 2.75%, reaching a historical high, with a year-to-date increase of approximately 8%. This performance was closely linked to Nvidia CEO Jensen Huang's announcement of new AI processor details at the CES, which boosted expectations across the entire supply chain [4]. Chinese Stocks - Chinese stocks faced pressure, with the Nasdaq Golden Dragon China Index declining by 0.78%. Notable gainers included Pinduoduo and Hesai Technology, both rising over 10%, while Alibaba dropped over 3% [6][8]. Commodity Market - The commodity market continued its upward trend, with spot gold surpassing $4,500 per ounce and silver breaking through $82, reflecting a year-to-date increase of 15%. Morgan Stanley predicts gold prices could reach $4,800 by Q4 2026, driven by declining interest rates and central bank demand [8]. Oil Prices - In contrast, international oil prices showed weakness, with WTI crude oil falling over 2% and ICE Brent crude also declining nearly 2%. Analysts attribute this drop to oversupply, slowing demand growth, and easing geopolitical tensions [9].