美股三大指数集体收跌，道指跌420点，蔚来跌超5%，阿里网易涨超4%

Market Overview - On December 1, US stock indices collectively declined, with the Dow Jones falling by 0.9%, losing over 420 points, the Nasdaq down by 0.38%, and the S&P 500 decreasing by 0.53% [1][2]. - Major tech stocks mostly fell, with Broadcom dropping over 4%, Google and Microsoft down over 1%, while Nvidia rose by 1.65% and Apple increased by 1.52%, reaching a historical high of $283.42 during the session [2]. Individual Stocks - Nvidia invested $2 billion in Synopsys, a leading electronic design automation (EDA) software provider, to enhance collaboration in engineering and design [4]. - Walmart's stock rose nearly 1%, reaching a historical high, as consumer online sales were projected to hit $14.2 billion on Cyber Monday [5]. - Chinese stocks showed strength, with the Nasdaq Golden Dragon China Index increasing by 0.87% and notable individual stock performances including Atour up over 5% and Alibaba up over 4% [5]. Commodity Market - Spot gold rose by 0.28% to $4,232.12, while silver prices reached a new high of $58.8 per ounce, marking a year-to-date increase of over 100% [6]. - Crude oil prices also saw gains, with West Texas Intermediate (WTI) rising by 1.64% to $59.51 per barrel, driven by geopolitical risks and supply concerns [6][7]. Cryptocurrency Market - Bitcoin fell over 5% to $86,415.3, with a year-to-date decline of 7.49%, while Ethereum dropped over 7% to $2,797.79 [7][8]. - The cryptocurrency market experienced significant liquidation, with over 270,000 liquidations amounting to $993 million in the last 24 hours [7]. Economic Indicators - The market anticipates that the Federal Reserve will announce a 25 basis point rate cut following its policy meeting on December 10, with a probability of 87.4% according to the CME FedWatch Tool [8].