A U.S. jury on Monday found a former HSBC Holdings Plc(HSBA.L) executive guilty of defrauding Cairn Energy Plc (CNE.L) in a $3.5 billion currency trade in 2011. U.S. prosecutors have said that Mark Johnson, formerly head of HSBC’s global foreign exchange cash trading desk, schemed to ramp up the price of British pounds before executing […]