美股三大指数集体高开，蔚来跌超7%

Group 1 - The three major US stock indices opened higher, with the Dow Jones up by 0.24%, the Nasdaq up by 0.42%, and the S&P 500 up by 0.33% [1][2] - Micron Technology saw an increase of over 3%, while TSMC and Nvidia rose by more than 1%. NIO, on the other hand, experienced a decline of over 7% [1] - The Nasdaq Golden Dragon China Index fell by 0.16% [1]