The Dow Jones Industrial Average closed down 821.91 points, or 1.66%, at 48,804.06 on Monday, February 23. The S&P 500 closed down 71.76 points, or 1.04%, at 6,837.75 on Monday, February 23. The Nasdaq Composite closed down 258.80 points, or 1.13%, at 22,627.27 on Monday, February 23.