A technique employed to take advantage of differences in price. If, for example, ABC stock can be bought in New York for $10 a share and sold in London at $10.50, an arbitrageur may simultaneously purchase ABC stock here and sell the same amount in London, making a profit of $.50 a share, less expenses. Arbitrage may also involve the purchase of rights to subscribe to a security, or the purchase of a convertible security – and the sale at or about the same time of the security obtainable through exercise of the rights or of the security obtainable through conversion. (See: Convertible, Rights)