An ETD Method for Vulnerable American Options

This paper introduces the exponential time differencing (ETD) technique as a numerical method to efficiently solve vulnerable American options pricing. We address several challenges, including removing cross-derivative terms through appropriate transformations, treating early-exercise opportunities...

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Main Authors: Rafael Company, Vera N. Egorova, Lucas Jódar
Format: Article
Language:English
Published: MDPI AG 2024-02-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/12/4/602
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author Rafael Company
Vera N. Egorova
Lucas Jódar
author_facet Rafael Company
Vera N. Egorova
Lucas Jódar
author_sort Rafael Company
collection DOAJ
description This paper introduces the exponential time differencing (ETD) technique as a numerical method to efficiently solve vulnerable American options pricing. We address several challenges, including removing cross-derivative terms through appropriate transformations, treating early-exercise opportunities using the penalty method, and substituting fixed boundary conditions with corresponding one-sided finite differences. The proposed method is shown to be both accurate and efficient through numerical experiments, which also compare the results with existing methods and analyze the numerical stability and convergence rate.
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spelling doaj.art-5475fc1f10eb4bc6a8b28804dedcef352024-02-23T15:26:15ZengMDPI AGMathematics2227-73902024-02-0112460210.3390/math12040602An ETD Method for Vulnerable American OptionsRafael Company0Vera N. Egorova1Lucas Jódar2Instituto de Matemática Multidisciplinar, Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, SpainDepartamento de Matemática Aplicada y Ciencias de la Computación, Universidad de Cantabria, Avenida de los Castros, s/n, 39005 Santander, SpainInstituto de Matemática Multidisciplinar, Universitat Politècnica de València, Camino de Vera, s/n, 46022 Valencia, SpainThis paper introduces the exponential time differencing (ETD) technique as a numerical method to efficiently solve vulnerable American options pricing. We address several challenges, including removing cross-derivative terms through appropriate transformations, treating early-exercise opportunities using the penalty method, and substituting fixed boundary conditions with corresponding one-sided finite differences. The proposed method is shown to be both accurate and efficient through numerical experiments, which also compare the results with existing methods and analyze the numerical stability and convergence rate.https://www.mdpi.com/2227-7390/12/4/602vulnerable optionsdefault riskexponential time differencingpenalty method
spellingShingle Rafael Company
Vera N. Egorova
Lucas Jódar
An ETD Method for Vulnerable American Options
Mathematics
vulnerable options
default risk
exponential time differencing
penalty method
title An ETD Method for Vulnerable American Options
title_full An ETD Method for Vulnerable American Options
title_fullStr An ETD Method for Vulnerable American Options
title_full_unstemmed An ETD Method for Vulnerable American Options
title_short An ETD Method for Vulnerable American Options
title_sort etd method for vulnerable american options
topic vulnerable options
default risk
exponential time differencing
penalty method
url https://www.mdpi.com/2227-7390/12/4/602
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