A PDE based Implementation of the Hull&White Model for Cashflow Derivatives

Sascha Meyer and Willi Schwarz

Computational Statistics, 2003, vol. 18, issue 3, 417-434

Abstract: A new implementation for the one-dimensional Hull&White model is developed. It is motivated by a geometrical approach to construct an invariant manifold for the future dynamics of forward zero coupon bond prices under a forward martingale measure. This reduces the option-pricing problem for cashflow derivatives to the solution of a series of heat equations. The heat equation is solved by a standard Crank-Nicolson scheme. The new method avoids the calibration used in traditional solution approaches. The computation of prices for European and Bermudan swaptions shows the convergence behavior of our new implementation. We also demonstrate the efficiency of our new approach resulting in a speed improvement by one order of magnitude compared to traditional trinomial tree implementations. Copyright Physica-Verlag 2003

Keywords: Hull&White model; Invariant Manifold; Heat Equation; Crank-Nicolson (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:spr:compst:v:18:y:2003:i:3:p:417-434

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DOI: 10.1007/BF03354607

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