美股涨跌不一纳指跌破100日线，光伏板块全面爆发，中概指数跌近2%

Market Performance - The US stock market continued its style rotation, with the Nasdaq Composite Index falling over 1% for the second consecutive day, closing at 22,904.58 points, and breaking below the 100-day moving average [1] - The S&P 500 Index decreased by 0.51% to 6,882.72 points, while the Dow Jones Industrial Average rose by 0.53% to 49,501.3 points [1] S&P 500 Component Stocks - Among the S&P 500 components, 363 stocks closed higher, leading to a 0.9% increase in the equal-weighted S&P 500 index [2] - Notable gainers included Advanced Micro Devices (AMD) down 17.31% after disappointing earnings, and other AI-related stocks like AppLovin and Palantir, which fell over 10% [2] - The "storage giants" also saw significant declines, with SanDisk down 15.95% and Micron Technology down 9.55% [2] Key Company Developments - Nvidia's CEO expressed confusion over the software sector's decline, emphasizing that AI tools are not replacing existing tools [2] - Alphabet announced a staggering capital expenditure forecast of $175 billion to $185 billion for the current fiscal year, significantly higher than the analyst expectation of $119.5 billion [3] - Following Alphabet's announcement, Broadcom, which produces TPUs for Google, saw its stock rise over 5% in after-hours trading [4] Chinese Stocks - The Nasdaq Golden Dragon China Index fell by 1.95%, with Alibaba down 2.76% and JD down 1.75% [6] Earnings Reports - Eli Lilly's stock rose 10.33% after a positive earnings report and optimistic sales guidance, solidifying its position in the obesity treatment market [7] - AMD experienced its largest single-day drop since 2017, down 17.31%, due to weak earnings guidance [8] - Qualcomm's disappointing earnings guidance led to an 8% drop in its stock [9] - Arm Holdings' stock fell 10% despite meeting market expectations for the quarter [10] - e.l.f. Beauty's stock surged 15% after significantly exceeding analyst expectations in both earnings and guidance [11]