The Dow Jones Industrial Average opened down 528.41 points, or 1.11%, at 46,888.86 on Thursday, March 12. The S&P 500 opened down 57.15 points, or 0.84%, at 6,718.64 on Thursday, March 12. The Nasdaq Composite opened down 197.87 points, or 0.87%, at 22,518.27 on Thursday, March 12.