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Covered call: Is it a conservative winning strategy?

机译:涵盖电话:这是保守的获胜策略吗?

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摘要

This dissertation examines the performance of the fully covered call strategy both theoretically and empirically. In the first essay, using standard Black-Scholes assumptions, we show that the expected return and standard deviation of the covered call strategy are smaller than those of the underlying equity, either in instantaneous case or over a finite time horizon. Next, we show theoretically that the covered call for a set of out of the money strike prices could outperform a buy and hold strategy if Sharpe ratio is used as the measure to rank and choose portfolios. This seemingly contradictory result to the finance theory comes from the inappropriate use of Sharpe ratio when the return is non-normally distributed. The covered call strategy does not dominate the buy and hold strategy any more when using alternative performance measure that accounts for the downside risk. A Monte Carlo study confirms these results.In the second essay, a few empirical tests are conducted. The first study uses simulated call prices and the results show that the out-of-the-money covered call strategy outperforms the buy and hold strategy in various market conditions between 1969 and 1999. This surprising result is further confirmed by another empirical analysis that uses actual option price data from 1998 to 2002. The implication is that the call option contracts might be overpriced in the market.
机译:本文从理论和实证角度考察了全覆盖呼叫策略的性能。在第一篇文章中,使用标准的Black-Scholes假设,我们证明了在即时情况下或在有限的时间范围内,有担保回购策略的预期收益和标准差小于基础股票的预期收益和标准差。接下来,我们从理论上证明,如果使用Sharpe比率作为对投资组合进行排名和选择的指标,那么套现货币罢工价格的要求可能会优于购买和持有策略。与金融理论相矛盾的结果是,当收益呈非正态分布时,夏普比率的不当使用。当使用替代性能指标来衡量下行风险时,有保证买入策略不再主导买入和持有策略。蒙特卡洛的研究证实了这些结果。在第二篇文章中,进行了一些实证检验。第一项研究使用模拟的看涨期权价格,结果表明,在1969年至1999年之间的各种市场条件下,有价证券的买入看涨期权策略优于买入和持有策略。这一令人惊讶的结果进一步得到了另一项实证分析的证实,从1998年到2002年的实际期权价格数据。这意味着看涨期权合约在市场上可能定价过高。

著录项

  • 作者

    Guo, Jian.;

  • 作者单位

    Purdue University.;

  • 授予单位 Purdue University.;
  • 学科 Economics General.Economics Finance.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 101 p.
  • 总页数 101
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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