On American options under the variance gamma process

Ariel Almendral*, Cornelis W. Oosterlee

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

American options are considered in a market where the underlying asset follows a Variance Gamma process. A sufficient condition is given for the failure of the smooth fit principle for finite horizon call options. A second-order accurate finite-difference method is proposed to find the American option price and the exercise boundary. The problem is formulated as a Linear Complementarity Problem and solved numerically by a convenient splitting. Computations have been accelerated with the help of the Fast Fourier Transform. A stability analysis shows that the scheme is conditionally stable, with a mild stability condition of the form k=O(|log(h)|-1). The theoretical results are verified numerically throughout a series of numerical experiments.

Original languageEnglish
Pages (from-to)131-152
Number of pages22
JournalApplied Mathematical Finance
Volume14
Issue number2
DOIs
Publication statusPublished - May 2007
Externally publishedYes

Bibliographical note

Funding Information:
This research was supported by the Dutch government through the national program BSIK: knowledge and research capacity, in the ICT project BRICKS (http://www.bsik-bricks.nl), theme MSV1. We would like to thank the referees for valuable comments.

Funding

This research was supported by the Dutch government through the national program BSIK: knowledge and research capacity, in the ICT project BRICKS (http://www.bsik-bricks.nl), theme MSV1. We would like to thank the referees for valuable comments.

Keywords

  • FFT
  • Finite differences
  • Integro-differential equations
  • Variance gamma

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