科研成果详情

In this paper, we present a new pricing method on N-fold compound option by adopting the theory of fuzzy sets into a fractional stochastic financial model. Considering the characteristics of correlations and kurtosis of returns in the long run, we employ the fractional Brownian motion to model the dynamic price of underlying assets. Then, a trapezoidal fuzzy stochastic process is employed to depict the fuzziness of underlying asset price. Involving the decision-maker’s subjective judgment, the mean value with the possibility–necessity weight and pessimistic–optimistic index is expressed. Further, the formulas of N-fold compound option price are derived by martingale method. Moreover, the valuation and properties of the formulas are analyzed under some reasonable assumptions. In the end, some numerical examples are provided to support our theoretical results and illustrate the mean of N-fold compound option pricing in fuzzy and fractional environments.