Evaluating approximations to the optimal exercise boundary for American options

Roland Mallier

Journal of Applied Mathematics, 2002, vol. 2, issue 2, 71-92

Abstract: We consider series solutions for the location of the optimal exercise boundary of an American option close to expiry. By using Monte Carlo methods, we compute the expected value of an option if the holder uses the approximate location given by such a series as his exercise strategy, and compare this value to the actual value of the option. This gives an alternative method to evaluate approximations. We find the series solution for the call performs excellently under this criterion, even for large times, while the asymptotic approximation for the put is very good near to expiry but not so good further from expiry.

Date: 2002
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https://doi.org/10.1155/S1110757X02000268

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Persistent link: https://EconPapers.repec.org/RePEc:wly:jnljam:v:2:y:2002:i:2:p:71-92

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