深夜，纳指大跌

Market Overview - The U.S. stock market experienced a significant decline, with major indices falling sharply due to heavy selling of key technology stocks, including AI leader Nvidia, amid a drop in interest rate cut expectations from the Federal Reserve [1][5]. - The Dow Jones Industrial Average fell by 797.60 points (1.65%) to 47,457.22, the Nasdaq dropped by 536.10 points (2.29%) to 22,870.36, and the S&P 500 decreased by 113.43 points (1.66%) to 6,737.49 [5]. Federal Reserve and Economic Data - Following a record 43-day government shutdown, the U.S. government resumed operations, which had previously raised investor concerns and disrupted economic data releases [2]. - The Federal Reserve officials have shown hesitation regarding further interest rate cuts, with market expectations for a December cut dropping to nearly 50% from 70% [2][5]. - Cleveland Fed President Loretta Mester emphasized the need for a restrictive interest rate policy to address ongoing inflation concerns [3]. - San Francisco Fed President Mary Daly stated it is too early to determine if a rate cut is warranted at the December meeting [4]. Sector Performance - In the S&P 500, the consumer discretionary sector fell by 2.73%, and the information technology sector declined by 2.37%, while the energy sector was the only one to gain, rising by 0.31% [6]. - Among industry ETFs, the semiconductor ETF dropped by 3.01%, and various technology-related ETFs fell between 2.55% and 2% [6]. Notable Stock Movements - Major tech stocks mostly declined, with Nvidia down 3.58%, Google A down 2.84%, Amazon down 2.71%, and Microsoft down 1.54%, while Meta saw a slight increase of 0.14% [7]. - Tesla experienced a significant drop of 6.64% due to a recall of approximately 10,500 Powerwall 2 battery systems over safety concerns [8]. - Cisco saw a notable increase of 4.6% after raising its full-year profit and revenue forecasts, benefiting from strong demand for network equipment in AI data centers [9]. - Disney's stock fell by 7.8% amid warnings of potential long-term channel conflicts with YouTube TV, raising concerns about its cable network cash flow [10]. - BioNTech's shares dropped by 7% as Pfizer announced plans to sell its remaining stake in the company, potentially raising about $508 million [10]. - Most Chinese concept stocks declined, with the Nasdaq Golden Dragon China Index down 1.59%, while Alibaba and Huya saw slight gains [10].