The European and American stock markets closed higher, with the S&P 500 index reaching a historic closing high, the Dow Jones Industrial Average up 0.83%, and the Nasdaq up 0.39%; Nvidia closed up 1.07%, reversing the nearly 4% intraday decline, while AMD fell nearly 9%, AMD fell nearly 5%, and Arm fell nearly 4%; Most popular Chinese concept stocks fell, with NIO falling more than 6%.