The Dow Jones Industrial Average closed down 272.39 points, or 0.51%, at 53,460.02 on Monday, August 17. The S&P 500 closed down 40.39 points, or 0.52%, at 7,745.37 on Monday, August 17. The Nasdaq Composite closed down 84.25 points, or 0.32%, at 26,644.91 on Monday, August 17.