Stocks tumbled on Friday, with the Nasdaq turning negative for the year, as Wall Street resumed its recent downtrend amid fears of an economic slowdown.

The Dow Jones industrial average <.DJI> lost 133.17 points, or 1.10 percent, to 11,991.19. The Standard & Poor's 500 Index <.SPX> fell 14.13 points, or 1.10 percent, to 1,274.87. The Nasdaq Composite Index <.IXIC> dropped 30.95 points, or 1.15 percent, to 2,653.92.