美股AI交易重新受到追捧，外媒评论“时代的商业模式已经开始运转”

Group 1 - The core viewpoint of the articles highlights a significant market rally driven by optimism surrounding artificial intelligence (AI) and its integration into national policies and corporate strategies [1][2] - Major U.S. stock indices closed higher, with the Dow Jones up 0.47% at 48,362.68 points, the S&P 500 up 0.64% at 6,878.49 points, and the Nasdaq up 0.52% at 23,428.83 points, indicating a positive market sentiment [1] - Companies like Merck and JPMorgan led the gains in the Dow, with Merck rising over 3% and JPMorgan nearly 2%, reflecting strong investor interest in these stocks [1] Group 2 - The resurgence of AI trading has captured market attention, with traders monitoring whether tech stocks can regain upward momentum before year-end [1] - AI is increasingly viewed as a fundamental capability that requires ongoing investment, as it has been incorporated into national-level plans and government procurement frameworks [1] - The articles suggest that the demand for AI is being transformed into a long-term task by policy initiatives, while corporate earnings reports are validating the new business models, leading to a recalibration of market prices rather than questioning the confidence in AI investments [2]