Open-Market Operation Daniel Guidotti 14 years ago Open-Market OperationTechnique used by monetary authorities to regulate domestic supply of money by buying or selling government securities.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:Open-Market Purchase Operation Open Repo Open-Outcry Open-End Fund