BIT Numerical Mathematics

, Volume 54, Issue 4, pp 1023–1065 | Cite as

Computable error estimates of a finite difference scheme for option pricing in exponential Lévy models

Article

Abstract

Option prices in exponential Lévy models solve certain partial integro-differential equations. This work focuses on developing novel, computable error approximations for a finite difference scheme that is suitable for solving such PIDEs. The scheme was introduced in (Cont and Voltchkova, SIAM J. Numer. Anal. 43(4):1596–1626, 2005). The main results of this work are new estimates of the dominating error terms, namely the time and space discretisation errors. In addition, the leading order terms of the error estimates are determined in a form that is more amenable to computations. The payoff is only assumed to satisfy an exponential growth condition, it is not assumed to be Lipschitz continuous as in previous works. If the underlying Lévy process has infinite jump activity, then the jumps smaller than some \(\epsilon > 0\) are approximated by diffusion. The resulting diffusion approximation error is also estimated, with leading order term in computable form, as well as the dependence of the time and space discretisation errors on this approximation. Consequently, it is possible to determine how to jointly choose the space and time grid sizes and the cut off parameter \(\epsilon \).

Keywords

Lévy process Infinite activity Diffusion approximation Parabolic integro-differential equation Weak approximation Error expansion A posteriori error estimates  Finite difference method Option pricing Jump-diffusion models 

Mathematics Subject Classification (2010)

65C05 65C30 65G20 65Y20 65L50 65H35 60H35 60H10 60G51 

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.LondonUK
  2. 2.CEMSE, KAUSTThuwalSaudi Arabia

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