The act of buying and selling goods simultaneously in different markets to gain an immediate profit. Impressive, but tricky.An arbitrage is a transaction that involves no negative cash flow at any probabilistic or temporal state and a positive cash flow in at least one state. The profit from buying something in one market and selling it in another. Arbitrage is when an asset (stocks, currencies, etc.) is bought in one market and sold in another for a higher price. The simultaneous purchase and sale of equivalent assets or of the same asset in multiple markets in order to exploit a temporary discrepancy in prices. Arbitrage is a form of negotiation between two parties having a disagreement buying a good in one market and selling it in another for a profit. Arbitrage is the simultaneous purchase and sale of an asset in order to take advantage of a difference in price. The simultaneous purchase and sale of the same securities, commodities, or foreign exchange in different markets to profit from unequal prices. Time-Zone Arbitrage.