A market model for stochastic smile: a conditional density approach

A. Zilber

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    The purpose of this paper is to introduce a new approach that allows to construct no-arbitrage market models of for implied volatility surfaces (in other words, stochastic smile models). That is to say, the idea presented here allows us to model prices of liquidly traded vanilla options as separate stochastic quantities. The main reason why market models of implied volatilities need to be constructed is that they can capture the stochastic nature of an implied volatility surface. More to the point, market models have a potential of improved pricing of forward volatility depending products, such as compound options. Besides, this framework allows to match the initial vanilla market by construction and hedge with simple call and put options in a natural way. The modelling approach presented in this paper relies on taking a deterministic smile model as a backbone around which a stochastic smile model can be constructed without violating no-arbitrage constraints.
    Original languageUndefined
    Place of PublicationEnschede
    PublisherUniversity of Twente, Faculty of Mathematical Sciences
    Number of pages17
    ISBN (Print)0169-2690
    Publication statusPublished - 2005

    Publication series

    PublisherDepartment of Applied Mathematics, University of Twente
    ISSN (Print)0169-2690


    • Market model
    • conditional density
    • IR-65967
    • MSC-91B70
    • MSC-62P05
    • conditional future smiles
    • volatility surface
    • EWI-3603
    • stochastic smile model
    • no-arbitrage conditions
    • METIS-227116
    • joint simulation of an asset and implied volatilities

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