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A Frequency Distribution Method for Valuing Average Options

Published online by Cambridge University Press:  29 August 2014

Edwin H. Neave
Edwin H. Neave*
Affiliation:
School of Business, Queen's University, Kingston, Ontario
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Abstract

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This paper finds payoff frequency distributions for valuing European and American fixed strike average options on a discrete time, recombining multiplicative binomial asset price process. In comparison to other discrete valuation methods the distributions, obtained analytically from a generating function, greatly reduce the computational requirements needed for accurate valuation. Less data are needed to value geometric than arithmetic averages, but the magnitude of calculations is similar for both instruments. Calculations of order T3 are needed to value European instruments, of order T4 to value their American counterparts. A frequency distribution of a quantity called path sums is used to value geometric average options, and a joint distribution of path sums and realized prices is used to value arithmetic average options. The frequency distributions give an exact value for geometric average, an approximate value for arithmetic average instruments. The method obtains additional information from the generating function to estimate approximation errors relative to the exact binomial solution. If the errors are significant they can be reduced using still further detail from the generating function. Error reduction can be performed selectively to minimize additional calculation.

Keywords

Binomial modelsoptions pricingaverage optionsGaussian binomial coefficientsnumerical methodsg
Type
Articles
Information
ASTIN Bulletin: The Journal of the IAA , Volume 27 , Issue 2 , November 1997 , pp. 173 - 205
Copyright
Copyright © International Actuarial Association 1997

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