Employee stock options (ESOs) are highly exotic derivatives including various forms of call options and performance shares. Much effort in the academic literature has been devoted to modelling employee risk aversion and early exercise of ESOs and less attention has been paid to the effects of...

This paper formally analyses two exotic options with lookback features, referred to as extreme spread lookback options and look-barrier options, first introduced by Bermin. The holder of such options receives partial protection from large price movements in the underlying, but at roughly the...

We consider in this article the arbitrage free pricing of double knock-out barrier options with payoffs that are arbitrary functions of the underlying asset, where we allow exponentially time-varying barrier levels in an otherwise standard Black-Scholes model. Our approach, reminiscent of the...