American Option Pricing with Importance Sampling and Shifted Regressions
نویسندگان
چکیده
This paper proposes a new method for pricing American options that uses importance sampling to reduce estimator bias and variance in simulation-and-regression based methods. Our suggested regressions under the measure directly, instead of nominal as is standard, determine optimal early exercise strategy. numerical results show this successfully reduces plaguing standard across wide range moneyness maturities, with negligible change variance. When low number paths used, our always improves on average root mean squared error estimated option prices by 22.5%.
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ژورنال
عنوان ژورنال: Journal of risk and financial management
سال: 2021
ISSN: ['1911-8074', '1911-8066']
DOI: https://doi.org/10.3390/jrfm14080340