Define: Arbitrage

UK Accounting Glossary

Definition: Arbitrage


Quick Summary of Arbitrage


An investment strategy which attempts to profit by exploiting price differences between two or more different markets – the goal being risk-free profit at no cost. The term is mainly applied to trading in financial instruments, such as bonds, stocks, derivatives, commodities and currencies.



What is the dictionary definition of Arbitrage?

Dictionary Definition


  1. finance A market activity in which a security, commodity, currency or other tradable item is bought in one market and sold simultaneously in another, in order to profit from price differences between the markets.
  2. archaic arbitration

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Full Definition of Arbitrage


Arbitrage is a financial transaction that involves a simultaneous purchase and sale of a given security or asset for the purpose of attaining the optimal profitability through yield differential. The synchronized buying and selling approach of arbitrage is best implemented when it takes place on different markets and exchanges. Thus, when arbitrage is employed, the purchase may be executed at one market, while the sale is done at another. An individual who engages in arbitrage is known as arbitrageur, or merely an arb. Arbitrage investment strategy is sometimes referred to as a “risk-free profit” or “no beta profit” since an arbitrage position is completely hedged. That means that arbitrage guarantees utmost performance of both sides of the transaction without risk or loss at the time the position is assumed. Arbitrage is an advance investment tactic based on arbitrage pricing theory. Emerging in the mid-seventies, arbitrage was devised as an alternative to CAPM (Capital Asset Pricing Model), which calculated the anticipated return by taking into account the rate of a risk-free security and a risk premium.


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Arbitrage. PayrollHeaven.com. Retrieved February 24, 2020, from PayrollHeaven.com website: https://payrollheaven.com/define/arbitrage/

Definition Sources


Definitions for Arbitrage are sourced/syndicated and enhanced from:

  • A Dictionary of Economics (Oxford Quick Reference)
  • BusinessDictionary.com
  • Oxford Dictionary Of Accounting
  • Oxford Dictionary Of Business & Management

This glossary post was last updated: 4th February 2020.