On the performance of delta hedging strategies in exponential Lévy models

On the performance of delta hedging strategies in exponential Lévy models
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指数 Lévy 模型中 Delta 对冲策略的表现

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发表时间:
2009
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通讯作者:
Arnd Pauwels
Arnd Pauwels
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作者:
Stephan Denkl;Martina Goy;J. Kallsen;Johannes Muhle‐Karbe;Arnd Pauwels

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摘要考虑指数Lévy模型中非最优套期保值策略的性能。假设未定权益的收益和套期保值策略都有合适的积分表示,我们使用Hubalek等人的拉普拉斯变换方法。[安。APPLProbab.,2006,16(2),853-885],以L过程的累积量母函数的形式推导出所产生的均方套期保值误差的半显式公式。在两个数值算例中,我们将这些结果应用于正态逆高斯模型和扩散扩展的CGMY Lévy模型中,比较了Black-Scholes套期保值和Delta模型与均值-方差最优套期保值的效率。
Abstract We consider the performance of non-optimal hedging strategies in exponential Lévy models. Given that both the payoff of the contingent claim and the hedging strategy admit suitable integral representations, we use the Laplace transform approach of Hubalek et al. [Ann. Appl. Probab., 2006, 16(2), 853–885] to derive semi-explicit formulas for the resulting mean-squared hedging error in terms of the cumulant generating function of the underlying Lévy process. In two numerical examples, we apply these results to compare the efficiency of the Black–Scholes hedge and the model delta with the mean–variance optimal hedge in a normal inverse Gaussian and a diffusion-extended CGMY Lévy model.