arbitrage business changeàterme china corporations couverture(finances) derivativesecurities economics exchangetradedfunds exoticoptions(finance) finance financialengineering financialfutures foreignexchange foreignexchangeadministration foreignexchangemarket futures gestiondurisque hedging(finance) interestratefutures internationalbusinessenterprises lawandlegislation money options(finance) riskmanagement speculation swaps(finance) unitedstates