Functional Central Limit Theorems for Rough Volatility
Functional Central Limit Theorems for Rough Volatility
复制标题
粗波动率的函数中心极限定理
DOI:
--
复制
发表时间:
2017
影响因子:
1.7
通讯作者:
Aitor Muguruza
中科院分区:
文献类型:
--
作者:
Blanka Horvath;A. Jacquier;Aitor Muguruza
The non-Markovian nature of rough volatility makes Monte Carlo methods challenging, and it is in fact a major challenge to develop fast and accurate simulation algorithms. We provide an efficient one for stochastic Volterra processes, based on an extension of Donsker’s approximation of Brownian motion to the fractional Brownian case with arbitrary Hurst exponent $H in (0,1)$
H
∈
(
0
,
1
)
. Some of the most relevant consequences of this ‘rough Donsker (rDonsker) theorem’ are functional weak convergence results in Skorokhod space for discrete approximations of a large class of rough stochastic volatility models. This justifies the validity of simple and easy-to-implement Monte Carlo methods, for which we provide detailed numerical recipes. We test these against the current benchmark hybrid scheme and find remarkable agreement (for a large range of values of $H$
H
). Our rDonsker theorem further provides a weak convergence proof for the hybrid scheme itself and allows constructing binomial trees for rough volatility models, the first available scheme (in the rough volatility context) for early exercise options such as American or Bermudan options.
影响因子:
1.3
作者:
C. Bayer;P. K. Friz;A. Gulisashvili;B. Horvath;B. Stemper
通讯作者:
B. Stemper
影响因子:
1.6
作者:
Christian;Peter K;Gassiat;Martin;Stemper;Benjamin
通讯作者:
Benjamin
DOI:
10.2139/ssrn.2531468
发表时间:
2014
期刊:
SSRN Electronic Journal
影响因子:
--
作者:
Guennoun H
通讯作者:
Guennoun H