U.S. stock futures fell for a third consecutive day on Monday, as economic data from China and Germany weighed on the market and as traders worried about the global economy. The Dow Jones Industrial Average erased 0.06%, to 13,492.00; the Standard & Poor 500 Index inched lower 0.38%, to 1,446.40, while Nasdaq 100 futures lost 0.58%, to 2,836.00.