Pricing of Defaultable Securities Associated with Recovery Rate Under the Stochastic Interest Rate Driven by Fractional Brownian Motion

摘要

This paper considers an improved model of pricing defaultable bonds under the assumption that the interest rate satisfies the Vasicek model driven by fractional Brownian motion (fBm for short) based on the counterparty risk framework of Jarrow and Yu (2001).The authors use the theory of stochastic analysis of fBm to derive pricing formulas for the defaultable bonds and study how the counterparty risk,recovery rate,and the Hurst parameter affect the values of the defaultable bonds.Numerical experiment results are presented to demonstrate the findings.