
Group 1 - The U.S. stock market showed mixed performance, with the Dow Jones slightly down, the S&P 500 nearly flat, and the Nasdaq rising due to strong tech stocks, reflecting cautious investor sentiment amid geopolitical uncertainties and Federal Reserve policy expectations [1][4] - Nvidia has set a new market capitalization record, driven by its leadership in artificial intelligence and strategic positioning in emerging markets like robotics and autonomous vehicles, indicating a significant business transformation beyond chip manufacturing [3][4] - The success of Nvidia highlights the importance of deep integration between hardware and software for future technological innovations, suggesting that multiple segments of the related industry chain will experience growth opportunities [3][4] Group 2 - The performance of tech stocks, particularly AI-related companies, remains a key driver for the Nasdaq's rise, while traditional blue-chip stocks show weakness, indicating a shift in investor preference between riskier assets and safe havens [3][4] - Investors are closely monitoring Federal Reserve Chairman Jerome Powell's congressional testimony, as any policy adjustments could directly impact market sentiment and capital flows [3][4] - Despite recent volatility in U.S. economic data, there is a general expectation that the Federal Reserve will adopt a gradual and flexible policy approach to avoid significant disruptions to economic growth [3][4]