PRICING PARISIAN-STYLE OPTIONS WITH A LATTICE METHOD

A Parisian-style barrier option expires if the price of the underlying asset remains above or below some level(s) continuously over a specified period of time (the "window"). A trinomial-lattice scheme is developed for calculating the price and the sensitivities of such options. Monte–Carlo simulation of hedging events using the resulting deltas show errors which are of the same magnitude as for hedging vanilla options, confirming the validity of proposed scheme. We use these results to price callable and convertible bonds with this "window" feature.