A comparison principle between rough and non-rough Heston models—with applications to the volatility surface
A comparison principle between rough and non-rough Heston models—with applications to the volatility surface
复制标题
粗糙和非粗糙 Heston 模型的比较原理及其在波动率表面上的应用
DOI:
10.1080/14697688.2020.1714702
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发表时间:
2020
影响因子:
1.3
通讯作者:
A. Majid
中科院分区:
文献类型:
--
作者:
M. Keller-Ressel;A. Majid
We present a number of related comparison results, which allow one to compare moment explosion times, moment generating functions and critical moments between rough and non-rough Heston models of stochastic volatility. All results are based on a comparison principle for certain non-linear Volterra integral equations. Our upper bound for the moment explosion time is different from the bound introduced by Gerhold, Gerstenecker and Pinter [Moment explosions in the rough Heston model.Decisions in Economics and Finance, 2019,42, 575–608] and tighter for typical parameter values. The results can be directly transferred to a comparison principle for the asymptotic slope of implied variance between rough and non-rough Heston models. This principle shows that the ratio of implied variance slopes in the rough versus non-rough Heston model increases at least with power-law behavior for small maturities.
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影响因子:
1.6
作者:
Martin Keller-Ressel
通讯作者:
Martin Keller-Ressel
DOI:
--
发表时间:
2019-05
期刊:
arXiv: Statistics Theory
影响因子:
--
作者:
M. Fukasawa;Tetsuya Takabatake;Rebecca Westphal
通讯作者:
M. Fukasawa;Tetsuya Takabatake;Rebecca Westphal
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:
1.7
作者:
R. Cont
通讯作者:
R. Cont
影响因子:
0.9
作者:
A. Jacquier;Martin Keller;A. Mijatović
通讯作者:
A. Mijatović