美股新年首个交易日：能源等防御性板块领涨，科技股下跌

Core Viewpoint - The U.S. stock market continues the trend of rotation observed at the end of 2025, with investors shifting from technology stocks to defensive sectors like energy and utilities, resulting in the Dow Jones outperforming the Nasdaq and S&P 500 indices [1]. Group 1: Market Performance - On the first trading day of 2026, the S&P 500 index rose by 0.2%, the Dow Jones Industrial Average increased by 0.7%, while the Nasdaq Composite index fell by 0.1%, marking its fifth consecutive day of decline [1]. - Technology stocks, including Palantir Technologies, AppLovin, and Microsoft, negatively impacted the major indices, while sectors such as energy, materials, and utilities saw price increases [1]. Group 2: Technology Sector Trends - The technology sector exhibited mixed performance, with Amazon and Meta experiencing stock price declines, and Tesla's stock dropping by 2.6% due to another year of declining delivery numbers, marking its longest consecutive decline in over a year [4]. - In contrast, chip manufacturers like Nvidia and Micron Technology saw stock price increases, along with data storage companies Western Digital and SanDisk, which were among the few bright spots in the tech sector [4]. Group 3: Investor Sentiment and AI Concerns - Investor concerns regarding the valuation and profitability of the artificial intelligence sector continue to grow, leading traders to favor more defensive or diversified industry choices [3]. - The market's focus on AI's ability to drive major indices higher in 2026 is a key concern for investors, with skepticism about the high valuations of tech stocks and cyclical transactions among major industry players [6]. Group 4: Market Outlook - Despite a relatively quiet trading week influenced by the New Year holiday, a clear rotation in investor strategy is evident, with the Dow Jones outperforming the Nasdaq and S&P 500 in November and December [7]. - Many investors still anticipate a continued rise in the stock market for 2026, supported by the "January Barometer" hypothesis, which suggests a 79% probability of the S&P 500 rising for the year if it increases in January [7].