Rough stochastic elasticity of variance and option pricing

被引:8
作者
Cao, Jiling [1 ]
Kim, Jeong-Hoon [2 ]
Kim, See-Woo [2 ]
Zhang, Wenjun [1 ]
机构
[1] Auckland Univ Technol, Sch Engn Comp & Math Sci, Dept Math Sci, Private Bag 92006, Auckland 1142, New Zealand
[2] Yonsei Univ, Dept Math, Coll Sci, Seoul 03722, South Korea
基金
新加坡国家研究基金会;
关键词
Short range correlation; Stochastic elasticity of variance; Fractional Ornstein-Uhlenbeck process; Hurst exponent; Mean reversion;
D O I
10.1016/j.frl.2019.101381
中图分类号
F8 [财政、金融];
学科分类号
0202 ;
摘要
This study is concerned with the elasticity of variance for risky assets. We show that the elasticity of variance for S&P500 exhibits short-range correlations. By using asymptotic and martingale methods, we obtain a semi-analytical expression for the option price in the two-scale regime where the constant elasticity of variance is perturbed by a smooth and bounded function of a rapid fractional Ornstein-Uhlenbeck process with Hurst exponent within (0, 2 ). The associated 1 implied volatility is presented and discussed. As a result, the scope of Markov stochastic elasticity of variance model is extended to a non-Markov case.
引用
收藏
页数:11
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