U.S. stocks jumped as Nvidia’s market-cap surpassed $5 trillion for the first time, driven by strong AI-chip orders and a broad-based tech rally. Benchmark indices such as the S&P 500 and Nasdaq Composite reached fresh highs. The surge lends strength to growth stocks globally and supports investor sentiment, though some strategists cautioned about the narrowness of leadership and elevated valuations. The event marks a milestone in the AI infrastructure boom while raising questions about sustainability of the momentum and potential risk of rotation.