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Market Performance - US stock markets closed lower on December 12, with the Dow Jones Industrial Average down 0.51% at 48,458.05 points, the S&P 500 down 1.07% at 6,827.41 points, and the Nasdaq down 1.69% at 23,195.17 points. For the week, the Dow Jones rose 1.05%, while the S&P 500 and Nasdaq fell 0.63% and 1.62%, respectively [1] - European stock indices also saw slight declines, with the German DAX down 0.41% at 24,196.16 points, the French CAC40 down 0.21% at 8,068.62 points, and the UK FTSE 100 down 0.56% at 9,649.03 points. The DAX rose 0.7% for the week, while the CAC40 and FTSE 100 fell 0.57% and 0.19%, respectively [1] Semiconductor Sector - The Philadelphia Semiconductor Index dropped 5.1%, with significant declines in major companies: Broadcom down over 11%, Micron Technology down over 6%, and Intel down over 4%. Concerns about profit margins and delayed revenue from AI contracts contributed to this downturn [2] - Broadcom reported Q4 sales of $18 billion, a 28% year-over-year increase, exceeding analyst expectations. However, CEO Hock Tan indicated that AI revenue margins are lower than non-AI margins, raising concerns about future profitability [2] Technology Stocks - Major US tech stocks mostly declined, with Nvidia down over 3%, Amazon down nearly 2%, and Google, Microsoft, and Facebook down over 1%. Tesla, however, saw an increase of nearly 3% [3] Oracle and AI Infrastructure - Oracle has postponed the completion of data centers for OpenAI from 2027 to 2028 due to labor and material shortages. Despite this delay, Oracle's CEO stated that the company is on track to meet ambitious capacity delivery goals [4] - Oracle's agreement with OpenAI is valued at up to $300 billion, aimed at providing infrastructure for model training and inference [4] Oil Market - International oil prices fell by 4% this week, with WTI crude oil closing at $57.53 per barrel and Brent crude at $61.21 per barrel. The decline is attributed to increasing global oil inventories and reduced geopolitical risk due to potential peace talks between Russia and Ukraine [5][7] - Analysts noted that the main issue in the oil market is the imbalance between rapidly growing supply and weak demand, with OPEC+ halting further production increases to alleviate concerns about oversupply [7]