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  • 标题:Accuracy Tests Of American Put Valuation Models For Pharmaceutical Equity Options
  • 作者:Yong H. Kim ; Sangwoo Heo ; Peter Cashel-Cordo
  • 期刊名称:Journal of Business & Economics Research
  • 印刷版ISSN:1542-4448
  • 电子版ISSN:2157-8893
  • 出版年度:2008
  • 卷号:6
  • 期号:2
  • 语种:English
  • 出版社:The Clute Institute for Academic Research
  • 摘要:This study compares the performance of the Macmillan (1986), Barone-Adesi and Whaley (1987) MBAW model, Ju and Zhong (1999) MQuad model, Black-Scholes model and Put-Call Parity in pricing American put options of pharmaceutical companies. These are evaluated using actual option prices for three companies over 2000 to 2005, as opposed to the previous use of generated binomial option pricing data. We compare the forecasting accuracy by maturity, moneyness, and variance estimate. Contrary to Ju and Zhong (1999), we find that the MBAW outperforms the other models for at-the-money, and out-of-the-money options. The MQuad model performs best for in-the-money options. However, in this case both the MBAW and MQuad models estimates are very similar. Our results are consistent irrespective of option maturities and volatility estimates. These findings raise questions regarding the practice of using actual prices as the true value, compared to the previous results that use simulated prices.
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