美股震荡分化：科技股回调，能源与国防军工板块强势崛起，中概股韧性显现金龙指数收涨1.09%

Market Overview - The US stock market showed a mixed performance, with the Dow Jones Industrial Average continuing its upward trend, approaching the psychological level of 50,000 points, while the tech-heavy Nasdaq index faced pressure from heavyweight stocks [1] - The Dow rose by 270.03 points, or 0.55%, closing at 49,266.11 points; the Nasdaq fell by 104.25 points, or 0.44%, closing at 23,480.02 points; the S&P 500 index was nearly flat, slightly up by 0.01%, closing at 6,921.46 points [1] Technology Sector - The technology sector experienced a pullback after several days of gains, with Nvidia down 2.15% and Apple declining for the seventh consecutive trading day, down 0.5% [2] - Other tech giants also saw declines, including Microsoft down 1.11% and Meta Platforms down 0.41%, contributing to the Nasdaq's overall decline [2] - Analysts noted that investors are becoming cautious about high valuations in AI concept stocks ahead of the earnings season, with a stricter market differentiation between winners and losers based on commercialization and capital expenditure returns [3] Chinese Stocks - Chinese stocks mostly rose, with the Nasdaq China Golden Dragon Index increasing by 1.09% [4] - Notable gainers included Century Internet up over 10%, and Global Data up over 8%, while companies like Bilibili, Tencent Music, and Alibaba saw gains exceeding 5% [4] Defense Sector - Defense stocks strengthened following Trump's proposal to increase military spending, suggesting a budget of $1.5 trillion for fiscal year 2027, a significant increase from the $901 billion approved for fiscal year 2026 [7] - This announcement positively impacted defense contractors, with Lockheed Martin rising by 4.3%, Northrop Grumman by 2.4%, and General Dynamics by 1.7% [7] Energy Sector - The energy sector was a market highlight, with stocks rising significantly due to a surge in international oil prices [8] - ConocoPhillips and Occidental Petroleum both rose over 5%, while ExxonMobil increased by over 3% and Chevron by more than 2% [8] - The S&P 500 energy index rose by 3.2%, marking the largest single-day increase since April 2025 [8] Economic Focus - Market attention is shifting towards the upcoming December non-farm payroll report, which is expected to provide valuable insights into the US labor market following the longest government shutdown in history [9] - Federal Reserve officials have differing views on interest rate cuts for the year, with some predicting only one cut while others anticipate two [9]