The Dow Jones Industrial Average opened down 320.22 points, or 0.79%, at 40,207.40 points on Wednesday, April 30;
The S&P 500 opened down 68.46 points, or 1.23%, at 5,492.33 points on Wednesday, April 30;
The Nasdaq Composite opened down 363.50 points, or 2.08%, at 17,097.82 points on Wednesday, April 30.