Sufficient conditions of stochastic dominance for general transformations and its application in option strategy

Sufficient conditions of stochastic dominance for general transformations and its application in option strategy
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一般变换的随机优势的充分条件及其在期权策略中的应用

DOI:
10.5018/economics-ejournal.ja.2018-1
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发表时间:
2018-01
影响因子:
0.5
通讯作者:
Gu Yundong
Gu Yundong
中科院分区:
经济学4区
文献类型:
--
作者:
Gao Jianwei;Zhao Feng;Gu Yundong

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摘要本文给出了一个反例,证明由Levy (stochastic dominance and expected utility: Survey and analysis, 1992)的定理5 (stochastic dominance and expected utility: Survey and analysis, 1992)提出的一个变换以二阶随机优势支配另一个变换的充分条件不成立。然后,通过限制控制变换的单调性,给出了一个修正的控制变换的精确充分条件。接下来,由Meyer (random dominance and transforms of random variables, 1989)提出并由Levy(1992)发展的随机优势准则被扩展到最一般的变换。并进一步推广到离散随机变量上的变换。最后,作者运用该方法分析了持有具有相应看涨期权的股票所产生的转换。
Abstract A counterexample is presented to show that the sufficient condition for one transformation dominating another by the second degree stochastic dominance, proposed by Theorem 5 of Levy (Stochastic dominance and expected utility: Survey and analysis, 1992), does not hold. Then, by restricting the monotone property of the dominating transformation, a revised exact sufficient condition for one transformation dominating another is given. Next, the stochastic dominance criteria, proposed by Meyer (Stochastic dominance and transformations of random variables, 1989) and developed by Levy (1992), are extended to the most general transformations. Moreover, such criteria are further generalized to transformations on discrete random variables. Finally, the authors employ this method to analyze the transformations resulting from holding a stock with the corresponding call option.
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