1. The Nasdaq fell 0.81%, the Dow Jones Industrial Average fell 0.93%, and the S&P fell 0.71%. 2. Affected by the "Microsoft Blue Screen" incident, Microsoft fell 0.74%, and network security company Crowdstrike fell more than 11%. 3. Technology stocks generally fell, with Intel falling more than 5% and Tesla falling more than 4%. 4. US crude oil fell more than 3%, international gold prices fell more than 2%, and fell below the $2400 mark.