A security that permits its owner to purchase a specific number of shares of stock at a predetermined price. For example, a warrant may give an investor the right to purchase 5 shares of XYZ common stock at a price of $25 per share until October 1, 2007. Warrants usually originate as part of a new bond issue, but they trade separately after issuance. Warrants usually have limited lives. Their values are considerably more volatile than the values of the underlying stock. Thus, investment in warrants is not for the timid.