美股三大股指集体低开，科技股多数下跌，戴尔科技跌约7%，英伟达、苹果、特斯拉跌超1%

Market Overview - On November 17, U.S. stock indices opened lower, with the Dow Jones down 0.27%, Nasdaq down 0.53%, and S&P 500 down 0.44% [1] - The current values for the indices are as follows: Dow Jones Industrial Average at 47022.46, Nasdaq at 22780.06, and S&P 500 at 6704.63 [2] Sector Performance - Technology stocks mostly declined, with Dell Technologies dropping approximately 7%, and Nvidia, Apple, and Tesla each falling over 1% [2] - Google saw an increase of over 3%, and Berkshire Hathaway's initial investment in Google attracted attention [2] Chinese Stocks - Chinese stocks exhibited mixed performance, with Alibaba rising over 2%, while Canadian Solar and Xpeng Motors fell by more than 3% [2]