Best Buy signals robust holiday shopping demand with upbeat forecast

(Reuters) - Best Buy Co Inc signalled it expected a strong holiday shopping season by forecasting fourth-quarter profit above Wall Street estimates on Tuesday, sending shares of the biggest U.S. consumer electronics retailer up over 8%.Target Corp and Walmart Inc have already predicted strong sales in the crucial period between Thanksgiving and Christmas that can account for as much as 40% of annual sales for U.S. retailers faced with a slowing economy.U.S. consumer spending is slowing faster..