Laplace Transform Method for Pricing American CEV Strangles Option with Two Free Boundaries

Zhiqiang Zhou and Hongying Wu

Discrete Dynamics in Nature and Society, 2018, vol. 2018, 1-12

Abstract:

Laplace transform method (LTM) has a lot of applications in the evaluation of European-style options and exotic options without early exercise features. However the Laplace transform methods for pricing American options have unsatisfactory accuracy and suffer from the instability. The aim of this paper is to develop a Laplace transform method for pricing American Strangles options with the underlying asset price following the constant elasticity volatility (CEV) models. By approximating the free boundaries, the Laplace transform is taken on a fixed space region to replace the moving boundaries space. After solving the linear system in Laplace space, Gaver-Stehfest formula (GSF) and hyperbola contour integral method (HCIM) are applied to compute the Laplace inversion. Numerical results show that the LTM-HCIM outperform the LTM-GSF in regard to the accuracy and stability for the option values.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnddns:5908646

DOI: 10.1155/2018/5908646

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