Arbitrage is the simultaneous purchase and sale of an asset in different markets in order to make a profit on the difference in price. Rental Arbitrage is a smart technique to earn money in any type of property including a multifamily house, duplexes, or triplexes.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 trading is a type of trading method that involves buying and selling an asset in one market while immediately selling it in another. Arbitrage in real estate is a type of investment strategy where real estate investors find new investment properties, rent them, and then sublease them. Rental arbitrage is a business model where an individual or entity rents a property longterm and then rerents or sublets that property on a shortterm basis. Driving this law is arbitrage, in which an investor buys and sells the same security for two different prices to make a profit. In the stock market, cashandcarry arbitrage involves buying shares of a company and simultaneously selling a futures contract on those shares. Filling brokers execute trades for customers. An individual who seeks out and takes advantage of arbitrage opportunities to make profit is known as an arbitrageur.