Ohio probe sought in pensions’ currency dispute

COLUMBUS — Ohio Trea­surer Josh Man­del has asked for a state inves­ti­ga­tion into whether banks may have manip­u­lated for­eign exchange rates charged to Ohio pen­sion funds and the state’s injured worker insur­ance, poten­tially cost­ing pen­sion­ers and busi­nesses tens of mil­lions of dol­lars over the past 12 years.