Perpetual American options in diffusion-typemodels with running maxima and drawdowns

Gapeev, Pavel V. ORCID: 0000-0002-1346-2074 and Rodosthenous, Neofytos (2016) Perpetual American options in diffusion-typemodels with running maxima and drawdowns. Stochastic Processes and Their Applications, 126 (7). pp. 2038-2061. ISSN 0304-4149

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Abstract

We study perpetual American option pricing problems in an extension of the Black-Merton-Scholes model in which the dividend and volatility rates of the underlying risky asset depend on the running values of its maximum and maximum drawdown. The optimal exercise times are shown to be the first times at which the underlying asset hits certain boundaries depending on the running values of the associated maximum and maximum drawdown processes. We obtain closed-form solutions to the equivalent free-boundary problems for the value functions with smooth fit at the optimal stopping boundaries and normal reflection at the edges of the state space of the resulting three-dimensional Markov process. The optimal exercise boundaries for the perpetual American options on the maximum of the market depth with fixed and oating strikes are determined as the minimal solutions of certain first-order nonlinear ordinary differential equations.

Item Type:	Article
Official URL:	http://www.journals.elsevier.com/stochastic-proces...
Additional Information:	© 2016 Elsevier
Divisions:	Mathematics
Subjects:	Q Science > QA Mathematics
Date Deposited:	09 Feb 2016 12:46
Last Modified:	12 Dec 2024 01:08
Funders:	Suntory and Toyota International Centres for Economics and Related Disciplines (STICERD)
URI:	http://eprints.lse.ac.uk/id/eprint/65295

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