Hedging with small uncertainty aversion

Hedging with small uncertainty aversion
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不确定性厌恶程度较小的对冲

DOI:
10.1007/s00780-016-0309-z
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发表时间:
2016
影响因子:
1.7
通讯作者:
F. Seifried
F. Seifried
中科院分区:
经济学2区
文献类型:
--
作者:
Sebastian Herrmann;Johannes Muhle‐Karbe;F. Seifried

文献摘要

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我们研究标的资产波动性不确定的衍生证券的定价和对冲。我们并没有同等重视预先指定类别中的所有模型,而是根据它们与参考局部波动率模型的“距离”来惩罚不太合理的模型。在较小的不确定性厌恶的限制下,这导致了根据证券的现金伽马得出明确的价格公式和对冲策略。
We study the pricing and hedging of derivative securities with uncertainty about the volatility of the underlying asset. Rather than taking all models from a prespecified class equally seriously, we penalise less plausible ones based on their “distance” to a reference local volatility model. In the limit for small uncertainty aversion, this leads to explicit formulas for prices and hedging strategies in terms of the security’s cash gamma.