A closed form solution for vulnerable options with Heston’s stochastic volatility

Min-Ku Lee, Sung-Jin Yang and Jeong-Hoon Kim

Chaos, Solitons & Fractals, 2016, vol. 86, issue C, 23-27

Abstract: Over-the-counter stock markets in the world have been growing rapidly and vulnerability to default risks of option holders traded in the over-the-counter markets became an important issue, in particular, since the global finance crisis and Eurozone crisis. This paper studies the pricing of European-type vulnerable options when the underlying asset follows the Heston dynamics. In this paper, we obtain a closed form analytic formula of the option price as a stochastic volatility extension of the classical Heston formula and find how the stochastic volatility effect on the Black–Scholes price as well as on the decreasing speed of the option price with credit risk depends on moneyness.

Keywords: Vulnerable option; Stochastic volatility; Default risk; Heston dynamics (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (21)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:86:y:2016:i:c:p:23-27

DOI: 10.1016/j.chaos.2016.01.026

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