## Abstract This study examines the implications for stock option pricing when the domain of the stock price is constrained by a lower boundary. The valuation strategy starts from the familiar geometric Brownian motion framework of Black & Scholes (1973). However, an instantaneously reflecting lowe
Option pricing with a non-zero lower bound on stock price
β Scribed by Ming Dong
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 161 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0270-7314
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β¦ Synopsis
Abstract
Black, F. and Scholes, M. (1973) assume a geometric Brownian motion for stock prices and therefore a normal distribution for stock returns. In this article a simple alternative model to Black and Scholes (1973) is presented by assuming a nonβzero lower bound on stock prices. The proposed stock price dynamics simultaneously accommodate skewness and excess kurtosis in stock returns. The feasibility of the proposed model is assessed by simulation and maximum likelihood estimation of the return probability density. The proposed model is easily applicable to existing option pricing models and may provide improved precision in option pricing. Β© 2005 Wiley Periodicals, Inc. Jrl Fut Mark 25:775β794, 2005
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Exact tests of equivalence and efficacy with a non-zero lower bound based on two independent binomial proportions for comparative trials are proposed. These exact tests are desirable for studies with small sample sizes. They generalize classical methods to include testing of null hypotheses of presp