Analytical formulae for variance and volatility swaps with stochastic volatility, stochastic equilibrium level and regime switching

Autor: Xin-Jiang He, Sha Lin
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: AIMS Mathematics, Vol 9, Iss 8, Pp 22225-22238 (2024)
Druh dokumentu: article
ISSN: 2473-6988
44630824
DOI: 10.3934/math.20241081?viewType=HTML
Popis: The CIR stochastic volatility model is modified to introduce nonlinear mean reversion, with the long-run volatility average as a random variable controlled by two parts being modeled through a Brownian motion and a Markov chain, respectively. This model still possesses an analytical formulation of the forward characteristic function, from which we establish variance swap prices as well as volatility swap ones with a nonlinear payoff in closed form. The numerical implementation of the two formulae demonstrates the significant impact of regime switching.
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