Stocks edged higher as company earnings reports started to come in, as worried investors have shown concerns about the nation’s growth rate. Wells Fargo, the first major bank to report results, dropped even after it reported a 25 percent jump in fourth-quarter earnings. More big banks are slated to report next week. Boeing fell after the FAA said it is launching a review of the company’s 787 Dreamliner after a recent fire and a fuel leak. Best Buy jumped on improved holiday sales. Markets were able to stay above water on reports suggesting the outlook for economic growth may be improving both in Europe and China.