Key TakeawaysPNC Financial shares surged Tuesday after the bank reported second-quarter earnings and revenue that beat analysts' estimates.PNC benefitted from higher fees, as well as an exchange of Visa stock.The bank also gave a stronger outlook for the full year, expecting a narrower decline in net interest income than it projected previously. PNC Financial (PNC) shares surged over 4% Tuesday after the bank reported second-quarter profit and revenue that beat analysts' estimates. The bank also gave a stro ...