American stocks dropped on Friday after a three-day rally on concerns about Spain's ability to repay government's debt, moreover, General Electric posted its quarterly report with earnings below the forecasts. The Dow Jones Index tumbled 0.54 per cent, to 12,873.51, the S&P 500 Index declined by 0.57 per cent, to 1,368.65, and the Nasdaq Composite Index dropped 0.62 per cent, to 2,947.57. Despite today's downfall of U.S. stocks, major indexes still closed higher previous week.