The Dow Jones Industrial Average closed down 116.20 points, or 0.22%, at 53,343.58 on Tuesday, August 18. The S&P 500 closed down 53.15 points, or 0.69%, at 7,691.91 on Tuesday, August 18. The Nasdaq Composite closed down 355.20 points, or 1.33%, at 26,289.71 on Tuesday, August 18.