The Use of Martingale Theory for the Superreplication of Exotic Options in Incomplete Markets

Abstract

In this article we show the importance of modern martingale theory for the pricing and hedging of exotic options, especially in incomplete markets. When emitting an exotic option, the seller firstly has to ask himself whether there exists a hedging strategy for this title or not. Especially, when he wants to use a more realistic model than the simple Black-Scholes framework, the answer is not always obvious. We show in this article how to analyze this problem in the case of an exotic option, the Generalized Bermudian Option, which will turn out to be a generalization of the American option.