The Dow Jones Industrial Average opened down 171.93 points, or 0.35%, at 49,588.63 on Wednesday, May 13. The S&P 500 opened up 1.07 points, or 0.01%, at 7,402.03 on Wednesday, May 13. The Nasdaq Composite opened up 36.70 points, or 0.14%, at 26,124.9 on Wednesday, May 13.