Superreplication in stochastic volatility models and optimal stopping
AbstractIn this paper we discuss the superreplication of derivatives in a stochastic volatility model under the additional assumption that the volatility follows a bounded process. We characterize the value process of our superhedging strategy by an optimal-stopping problem in the context of the Black-Scholes model which is similar to the optimal stopping problem that arises in the pricing of American-type derivatives. Our proof is based on probabilistic arguments. We study the minimality of these superhedging strategies and discuss PDE-characterizations of the value function of our superhedging strategy. We illustrate our approach by examples and simulations.
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Bibliographic InfoArticle provided by Springer in its journal Finance and Stochastics.
Volume (Year): 4 (2000)
Issue (Month): 2 ()
Note: received: June 1998; final version received: April 1999
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Web page: http://www.springerlink.com/content/101164/
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