Wall Street's main indexes closed higher on Wednesday. The S and P 500 gained 40.45 points, or 0.70%, to end at 5,791.58 points. The Nasdaq Composite .IXIC gained 108.91 points, or 0.60%, to 18,291.82. The Dow Jones Industrial Average .DJI rose 432.48 points, or 1.03%, to 42,512.85. Source: Qatar News Agency