The Dow Jones Industrial Average closed down 739.42 points, or 1.56%, at 46,677.85 on Thursday, March 12. The S&P 500 closed down 103.22 points, or 1.52%, at 6,672.58 on Thursday, March 12. The Nasdaq Composite closed down 404.16 points, or 1.78%, at 22,311.98 on Thursday, March 12.