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A generalized European option pricing model with risk management

Chengxiao Feng, Jie Tan, Zhenyu Jiang and Shuang Chen

Physica A: Statistical Mechanics and its Applications, 2020, vol. 545, issue C

Abstract: Risk control systems in financial markets with numerous innovative financial products are characterized by infrequent and significant fluctuations (e.g., financial crises and minor disturbances occurring anytime and anywhere). Given that the traditional Black–Scholes (BS) model is difficult to adapt to ever-changing financial markets, to better describe real financial markets, this paper presents a generalized European option-pricing model with stochastic volatility and stochastic interest rates and pure jumps under Levy processes, which are stochastic processes with both stationary and independent increments. We use the Levy–Ito formula and measurement tools to transform logarithmic stock prices into conditions under risk neutral measures, and the characteristic functions of logarithmic stock prices are obtained using the decomposed characteristic function form. We in turn obtain a characteristic function solution based on the Fourier and inverse Fourier transform. Finally, we conduct a Monte Carlo (MC) simulation which highlight the adaptability, accuracy and efficiency of the FFT algorithm. The proposed model is superior from an economic and mathematics perspective, as it not only inherits advantages of the BS model but also better depicts the leptokurtosis and jump phenomenon in option markets.

Keywords: Finance; Option pricing; Risk management; Levy processes (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:545:y:2020:i:c:s0378437119321132

DOI: 10.1016/j.physa.2019.123797

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