美股三大指数集体收跌，热门中概股多数下跌，携程跌超17%

Market Overview - On January 15, US stock indices collectively declined, with the Nasdaq index experiencing the largest drop. Technology stocks weakened as investors shifted funds to defensive sectors, while bank stocks continued to fall after mixed quarterly earnings reports [1] - The financial sector, which had seen significant gains in 2025, has been retreating this week amid concerns over President Trump's proposed credit card interest rate cap, which could squeeze consumer credit space and harm financial industry profits [1] - Major banks like Wells Fargo saw a 4.6% drop in stock price after reporting quarterly profits and revenues below market expectations, while Bank of America and Citigroup also saw declines despite better-than-expected earnings [1][3] Economic Data - In November, the US PPI increased by 3% year-over-year, surpassing the expected 2.7%, while the core PPI also exceeded expectations at 3% year-over-year [2] - The Federal Reserve's Beige Book indicated that economic activity has recently grown in most regions, with stable employment conditions, but inflation pressures remain, supporting the Fed's decision to maintain interest rates in the short term [2] Sector Performance - The Dow Jones fell by 42.36 points (0.09%) to 49,149.63, the Nasdaq dropped by 238.12 points (1.00%) to 23,471.75, and the S&P 500 decreased by 36.75 points (0.53%) to 6,926.99 [3] - Among the 11 sectors in the S&P 500, consumer discretionary fell by 1.75%, technology by 1.45%, while the energy sector rose by 2.26% [3] Stock Performance - Major tech stocks experienced declines, with Google A down 0.04%, Apple down 0.42%, Nvidia down 1.44%, Tesla down 1.79%, Microsoft down 2.4%, and Amazon down 2.45% [4] - Energy stocks rose due to concerns over potential disruptions in Iranian oil supply, with Marathon Oil up 3%, Occidental Petroleum up 2.33%, and ExxonMobil up 2.9% [4] Company News - Google announced the testing of a new AI tool called "Personal Intelligence" within its Gemini application, which integrates information from various apps to provide personalized responses [6] - OpenAI signed a multi-year agreement with Cerebras Systems for over $10 billion in computing power to support its expanding AI infrastructure, aiming to enhance response speeds and unlock new application scenarios [6]