美股科技股深夜重挫，中概股亿鹏能源飙涨43%，国际油价大涨3%，美国向中东增派海军陆战队和军舰

Market Overview - US stock markets experienced a collective decline, with the Dow Jones down 0.26%, S&P 500 down 0.61%, and Nasdaq down 0.93% on March 13. The Dow fell 1.99% and Nasdaq 1.26% for the week, marking the longest weekly decline for the S&P 500 since March 2025, down 1.6% [1][2] Major Indices Performance - The Dow closed at 46,558.47, down 119.38 points; Nasdaq at 22,105.36, down 206.62 points; S&P 500 at 6,632.19, down 40.43 points [2] Sector Performance - Major tech stocks fell collectively, with the US Tech Giants Index down 1.59%. Facebook dropped nearly 4%, marking its largest single-day decline since October 30, 2025. Apple fell over 2%, while Microsoft and Nvidia dropped over 1% [2][3] Semiconductor Sector - The Philadelphia Semiconductor Index saw mixed results, up 0.05%. Notable gainers included SanDisk up nearly 7%, Micron Technology up over 5%, and Western Digital up over 4%. However, Broadcom fell over 4%, and AMD dropped more than 2% [2] Commodity Market - International gold prices fell for three consecutive days, down 1.18% to $5,018.098 per ounce. Silver prices also dropped nearly 4%, briefly falling below $80 [3][4] - Oil prices increased, with WTI crude oil futures rising 3.11% to $99.3 per barrel, accumulating over 9% for the week. Brent crude oil futures rose 3.41% to $103.89 per barrel, with a weekly increase of 12% [3][4] Consumer Confidence - The preliminary consumer confidence index for March 2026 was reported at 55.5, down from 56.6 in February and 57 in March 2025, indicating a decline of approximately 2% and the lowest level since the beginning of 2026 [5]