Arbitrage is when an asset (stocks, currencies, etc.) is bought in one market and sold in another for a higher price. Arbitrage is the simultaneous purchase and sale of the same asset in different markets in order to profit from a difference in its price.Arbitrage in trading is the practice of simultaneously buying and selling an asset to take advantage of a difference in price. Arbitrage trading is a type of trading method that involves buying and selling an asset in one market while immediately selling it in another. Arbitrage is the act of taking advantage of a price difference in two different markets. Currency arbitrage refers to the practice of taking advantage of exchange rate differences in various foreign exchange market venues to make a net profit. Appraisal arbitrage really changed the game. Arbitrage is a form of trading in which a trader seeks to profit from discrepancies in the prices of identical or related financial instruments. Arbitrage is a simple concept.