Definition: Simultaneous purchase of assets in one market and their sale in another market. Arbitrage takes advantage of the price differential in various markets. Definition: [crh] The simultaneous buying and selling of a security at two different prices in two different Definition: >markets, resulting in profits without risk. Perfectly efficient markets present no arbitrage opportunitiesDefinition: . Perfectly efficient markets seldom exist, but, arbitrage opportunities are often precluded because of transactions costs.

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