美股科技、银行股深夜大跌，CoreWeave重挫17%，戴尔狂飙18%，金银原油齐涨，美伊战争风险急剧升高

Market Overview - The U.S. stock market indices collectively declined, with all three major indices falling over 1% [1] - Major technology stocks mostly dropped, with Oracle and Salesforce down over 4%, and the "Big Seven" tech stocks, including Nvidia and Microsoft, down over 2% [1] Individual Stock Performance - Apple shares fell by 1.39%, Amazon by 0.81%, Google by 0.28%, Facebook by 2.34%, Microsoft by 2.15%, Nvidia by 2.24%, and Tesla by 1.14% [2] - Semiconductor stocks experienced a significant decline, with the Philadelphia Semiconductor Index leading the market drop, and companies like Bluefin Semiconductor down over 5% and Broadcom and GlobalFoundries down over 2% [2] - Bank stocks also saw a downturn, with Barclays and Citigroup down approximately 4%, and Bank of America and Wells Fargo down over 4% [2] Notable Stock Movements - CoreWeave's stock plummeted over 17%, marking its largest drop since August of the previous year due to concerns over massive capital expenditures [4] - Duolingo's stock fell by 22%, reaching its lowest level since February 2023, as the company's booking outlook for Q1 and the full year fell short of expectations [4] - Dell Technologies saw its stock surge by 18%, the largest intraday increase since April 9, as its revenue guidance for fiscal 2027 exceeded market expectations [4] - Netflix's stock rose by 12%, marking its largest increase since January 2025, following its exit from the Warner Bros. bidding war [4] - Block, the U.S. version of Alipay, increased nearly 20%, achieving its largest intraday gain since February 2024 [4] Commodity Market - Gold and silver prices surged due to escalating tensions in the Middle East, with silver rising approximately 5% and gold exceeding $5,230 [3][5] - International oil prices also spiked, with WTI and ICE Brent crude both increasing over 3% [3][5] - Year-to-date, international oil prices have risen nearly 20%, with potential for significant fluctuations depending on geopolitical developments involving the U.S. and Iran [5] Cryptocurrency Market - The cryptocurrency market experienced a widespread decline, with Bitcoin down 2.5% and Ethereum down over 5%, leading to over 100,000 liquidations globally in the past 24 hours [5]