RT Journal Article
SR Electronic
T1 Long and Short Memory in the Risk-Neutral Pricing Process
JF The Journal of Derivatives
FD Institutional Investor Journals
SP jod.2019.1.077
DO 10.3905/jod.2019.1.077
A1 Young Shin Kim
A1 Danling Jiang
A1 Stoyan Stoyanov
YR 2019
UL https://pm-research.com/content/early/2019/04/17/jod.2019.1.077.abstract
AB The article proposes a semi-martingale approximation to a fractional Lévy processes that is capable of capturing long and short memory in the stochastic process together with fat tails. We use the semi-martingale process in option pricing and empirically compare its performance to other option pricing models, including a stochastic volatility Lévy process. We contribute to the empirical literature by being the first to report the implied Hurst index computed from observed option prices using the Lévy process model. Calibrating the implied Hurst index of S&P 500 option prices in a period that covers the 2008 financial crisis, we find that the risk-neutral measure is characterized by a short memory in turbulent markets and a long memory in calm markets.TOPICS: Options, statistical methods, performance measurement