Opening Bell Daniel Guidotti 11 years ago Opening BellBell that is rung to signify the start of trading in an exchange.Random Finance Terms for the Letter OOpen PositionOpen RepoOpen-End FundOpen End LeaseOpen-End MortgageOpen-Market OperationOpen-Market Purchase OperationOpen-OutcryOpening, TheOpening BellRecommended for you:Opening, The Open Repo Open-Outcry Open-Market Purchase Operation