OPEC (Organization of Petroleum Exporting Countries) Daniel Guidotti 14 years ago OPEC (Organization of Petroleum Exporting Countries)International organization grouping all oil producing nations.Random Finance Terms for the Letter OOne-Way MarketOPEC (Organization of Petroleum Exporting Countries)Open AccountOpen InterestOpen BookOpen ContractsOpen InterestOpen ListingOpen (Good-Till-Cancelled) OrderRecommended for you:Open Contracts Open Interest Open (Good-Till-Cancelled) Order Open Account