Many of the County's issuances are subject to the arbitrage rebate requirements contained in. The act of buying and selling goods simultaneously in different markets to gain an immediate profit.Impressive, but tricky. ADR stands for Alternative Dispute Resolution. It refers to processes that are "alternatives" to having a trial to resolve your dispute. The simultaneous purchase and sale of the same securities, commodities, or foreign exchange in different markets to profit from unequal prices. Arbitrage is the simultaneous purchase and sale of an asset in order to take advantage of a difference in price.