《Precise asymptotics: robust stochastic volatility models》
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作者:
Peter K. Friz, Paul Gassiat, Paolo Pigato
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最新提交年份:
2020
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英文摘要:
We present a new methodology to analyze large classes of (classical and rough) stochastic volatility models, with special regard to short-time and small noise formulae for option prices. Our main tool is the theory of regularity structures, which we use in the form of [Bayer et al; A regularity structure for rough volatility, 2017]. In essence, we implement a Laplace method on the space of models (in the sense of Hairer), which generalizes classical works of Azencott and Ben Arous on path space and then Aida, Inahama--Kawabi on rough path space. When applied to rough volatility models, e.g. in the setting of [Forde-Zhang, Asymptotics for rough stochastic volatility models, 2017], one obtains precise asymptotic for European options which refine known large deviation asymptotics.
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中文摘要:
我们提出了一种新的方法来分析大类(经典和粗糙)随机波动率模型,特别是关于期权价格的短期和小噪声公式。我们的主要工具是规则结构理论,我们以[拜耳等人;粗糙波动率的规则结构,2017年]的形式使用该理论。本质上,我们在模型空间上实现了一种拉普拉斯方法(在海尔意义上),它在路径空间上推广了Azencott和Ben Arous的经典著作,然后在粗糙路径空间上推广了Aida、Inahama和Kawabi的经典著作。当应用于粗糙波动率模型时,例如在【Forde Zhang,粗糙随机波动率模型的渐近性,2017】的设置中,我们可以获得欧洲期权的精确渐近性,这些期权细化了已知的大偏差渐近性。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Pricing of Securities 证券定价
分类描述:Valuation and hedging of financial securities, their derivatives, and structured products
金融证券及其衍生产品和结构化产品的估值和套期保值
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一级分类:Mathematics 数学
二级分类:Probability 概率
分类描述:Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用:例如中心极限定理,大偏差,随机微分方程,统计力学模型,排队论
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