纳指跌1.18%！美股重挫，英伟达领跌，中概股普跌

Group 1 - The Nasdaq Composite Index experienced a significant drop of 1.18%, closing at 22,878.38 points, with a loss of 273.7 points, primarily driven by a downturn in technology stocks [3] - Major technology stocks faced substantial declines, with Tesla down over 2.11%, Google A down 1.76%, Amazon down 1.29%, and Apple down 0.47%, while only Microsoft and Meta saw slight gains [3] - The Philadelphia Semiconductor Index plummeted by 3.19%, indicating a widespread decline in the semiconductor sector, with major companies like AMD, Intel, and Broadcom all experiencing losses exceeding 3% [3] Group 2 - Nvidia, a leader in AI computing, saw a rare drop of 5.46%, marking its largest single-day decline since April 2025, resulting in a market value loss of $25.93 billion, equivalent to over 1.77 trillion yuan [4] - The decline in Nvidia's stock is attributed to profit-taking after a strong earnings report and concerns over long-term procurement commitments, leading to a significant sell-off [4] - Nvidia's drop has negatively impacted the entire AI computing and semiconductor supply chain, causing related stocks in both A-shares and Hong Kong stocks to also decline [4] Group 3 - The Nasdaq Golden Dragon Index, which tracks Chinese stocks, fell by 1.78%, reflecting the negative sentiment in the global market and resulting in widespread losses among popular Chinese stocks [5] - Notable declines among Chinese stocks included Baidu down 5.6%, Li Auto down 3%, Alibaba down 2.8%, and JD down 2.03%, indicating a broad-based sell-off across both internet giants and new energy vehicle companies [5] - The downturn in Chinese stocks is primarily a result of a global shift in investment style, with funds favoring low-valuation, high-dividend defensive stocks in a high-interest-rate environment [5]