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Delta-hedging in fractional volatility models
Annals of Finance Pub Date : 2022-11-09 , DOI: 10.1007/s10436-022-00415-w
Qi Zhao , Alexandra Chronopoulou

In this paper, we propose a delta-hedging strategy for a long memory stochastic volatility model (LMSV). This is a model in which the volatility is driven by a fractional Ornstein–Uhlenbeck process with long-memory parameter H. We compute the so-called hedging bias, i.e. the difference between the Black–Scholes Delta and the LMSV Delta as a function of H, and we determine when a European-type option is over-hedged or under-hedged.



中文翻译:

部分波动率模型中的 Delta 对冲

在本文中,我们提出了一种用于长记忆随机波动率模型 (LMSV) 的 delta 对冲策略。这是一个模型,其中波动率由具有长记忆参数H的分数 Ornstein-Uhlenbeck 过程驱动。我们计算所谓的对冲偏差,即作为H函数的 Black-Scholes Delta 和 LMSV Delta 之间的差异,我们确定欧式期权何时过度对冲或对冲不足。

更新日期:2022-11-10
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