US STOCKS-Wall St falls on earnings concern; Amazon rallies

U.S. stocks fell on Friday, pressured by concern over euro zone stability and its potential impact on U.S. corporate results and by domestic economic growth data. U.S. economic growth slowed sharply in the fourth quarter as weak business spending and a wider trade deficit offset the fastest pace of consumer spending since 2006. He said that while sluggish growth in the fourth quarter was disappointing, consumer spending was a bright spot. Amazon shares jumped 11.4 percent after posting earnings