Callable bond indentures contain provisions that allow the issuing entity to retire the bond at a predetermined price before the maturity of the bond.1 As such a callable bond is often viewed as a combination of an otherwise identical but non-callable bond and an option to call that bond. The writer of the call option is the holder of the bond, and the buyer of the call is the stockholder of the issuing corporation. Thus, the price of a callable bond is the value of the straight bond less the value of the call provision.