U.S. stocks tumbled on growth fears

Wall Street turned red on Tuesday as the International Monetary Fund said the global economy is expected to grow only 3.3% in 2012, compared to the previous estimate of 3.5%. The Dow Jones Industrial Average fell 0.1%, to 13,575.97; the Standard & Poor 500 Index declined 0.15%, to stand at 1,453.69, while Nasdaq 100 futures lost 0.3%, to 3,102.40