Walmart on Thursday raised its annual forecasts for the second time this year after another strong quarter led by surging online sales, in a signal of confidence headed into the holiday season.Shares rose 5.9% in early trading after it bumped up its annual net sales forecast to between 4.8% and 5.1%, up from a prior target of 3.75% to 4.75%.It also lifted its adjusted earnings per share outlook to $2.58 to $2.63, compared with $2.52 to $2.62 previously, and said it will shift its stock listing to the Nasdaq ...