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Consistent stable difference schemes for nonlinear Black-Scholes equations modelling option pricingwith transaction costs

Published online by Cambridge University Press:  12 June 2009

Rafael Company
Affiliation:
Instituto Universitario de Matemática Multidisciplinar, Universidad Politécnica de Valencia, Edificio 8G, piso 2, P.O. Box 46022, Valencia, Spain. rcompany@imm.upv.es; ljodar@imm.upv.es; jrpt60@gmail.com
Lucas Jódar
Affiliation:
Instituto Universitario de Matemática Multidisciplinar, Universidad Politécnica de Valencia, Edificio 8G, piso 2, P.O. Box 46022, Valencia, Spain. rcompany@imm.upv.es; ljodar@imm.upv.es; jrpt60@gmail.com
José-Ramón Pintos
Affiliation:
Instituto Universitario de Matemática Multidisciplinar, Universidad Politécnica de Valencia, Edificio 8G, piso 2, P.O. Box 46022, Valencia, Spain. rcompany@imm.upv.es; ljodar@imm.upv.es; jrpt60@gmail.com
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Abstract

This paper deals with the numerical solution of nonlinear Black-Scholes equation modeling European vanilla call option pricing under transaction costs. Using an explicit finite difference scheme consistent with the partial differential equation valuation problem, a sufficient condition for the stability of the solution is given in terms of the stepsize discretization variables and the parameter measuring the transaction costs. This stability condition is linked to some properties of the numerical approximation of the Gamma of the option, previously obtained. Results are illustrated with numerical examples.

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Type
Research Article
Copyright
© EDP Sciences, SMAI, 2009

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