道指、标普创新高，德纳维制药深夜狂拉38%，金银走势分化，钯金大跌7%

Market Performance - The US stock market closed early due to the Christmas holiday, with all three major indices recording gains for five consecutive days, marking new historical closing highs for both the S&P 500 and Dow Jones [1][2] - The Dow Jones increased by 0.6% to 48,731.16 points, the S&P 500 rose by 0.32% to 6,932.05 points, and the Nasdaq gained 0.22% to 23,613.31 points [1][2] Sector Performance - Large technology stocks showed mixed results, with the Tech Giants Index slightly up; Apple led with a 0.53% increase, while Intel and Nvidia fell by 0.52% and 0.32%, respectively [2] - Micron Technology, a global storage chip giant, rose by 3.77%, with a year-to-date increase of over 241%; Sandisk and Western Digital also saw significant gains of 613% and 300% year-to-date, respectively [2] Chinese Stocks - The Nasdaq Golden Dragon China Index experienced a slight decline of 0.07%, with notable movements in individual Chinese stocks; Zhenkunhang surged over 11%, and Zai Ding Pharmaceutical rose over 6% [2] - Other Chinese stocks like Arctech Solar and Pinduoduo increased by over 1%, while Xinyang fell over 3%, and stocks like Bawang Tea and iQIYI dropped by over 1% [2] Notable Corporate Actions - Denawei Pharmaceutical's stock soared over 38% following Sanofi's announcement of a $2.2 billion acquisition aimed at expanding its vaccine product line [4][5] - Nike's stock closed nearly 5% higher, despite a year-to-date decline of over 12%, underperforming the S&P 500; notable was Apple CEO Tim Cook's purchase of 50,000 shares, signaling strong internal confidence in the company's future value [6][7] Precious Metals Market - Gold and silver prices showed mixed trends, with COMEX gold futures closing at $4,505.4 per ounce, while silver futures rose to above $71 per ounce [8][10] - Palladium experienced a significant drop of over 8%, with NYMEX palladium futures closing near $1,800 per ounce [9][10] Economic Indicators - Initial jobless claims in the US were reported at 214,000, lower than the expected 224,000, indicating a stronger labor market [11][13] - The Federal Reserve's potential for further rate cuts in 2026 is limited, with expectations of only two rate cuts anticipated, as the current rate is approaching neutral levels [12][13]