Arbitrage is the simultaneous purchase and sale of the same asset in different markets in order to profit from a difference in its price. We discuss various forms of what is commonly called "arbitrage" in this context, and single out a particularly egregious form of this phenomenon.This is a risk-free profit. Arbitrage is the act of taking advantage of a price difference in two different markets. Arbitrage is a financial term that means taking advantage of different prices for the same assets in different markets. Airbnb rental arbitrage is the act of renting a property longterm and then rerenting it shortterm on vacation rental sites like Airbnb or Vrbo. Arbitrage betting is all about spotting inefficiencies in the betting marketplace in order to guarantee profits. Arbitrage is a mathematical, data-driven strategy for making risk-free profits off the sportsbooks.