Commuting to Radnor and Wharton. Arbitrage is the simultaneous purchase and sale of the same asset in different markets in order to profit from a difference in its price.Rental Arbitrage is a method similar to house hacking. But unlike house hacking in Rental Arbitrage, you don't own the house. Arbitrage trading is a type of trading method that involves buying and selling an asset in one market while immediately selling it in another. Airbnb rental arbitrage is the act of renting a property longterm and then rerenting it shortterm on vacation rental sites like Airbnb or Vrbo. The simultaneous buying and selling of a security at two different prices in two different markets, resulting in profits without risk. Changes in interest rates can give rise to arbitrage opportunities that, while short-lived, can be very lucrative for traders who capitalize on them. What Is Factor Investing?