Thiele's PIDE for unit-linked policies in the Heston-Hawkes stochastic volatility model

David R. Ba\~nos, Salvador Ortiz-Latorre and Oriol Zamora Font

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Abstract: The main purpose of the paper is to derive Thiele's differential equation for unit-linked policies in the Heston-Hawkes stochastic volatility model introduced in arXiv:2210.15343. This model is an extension of the well-known Heston model that incorporates the volatility clustering feature by adding a compound Hawkes process in the volatility. Since the model is arbitrage-free, pricing unit-linked policies via the equivalence principle under a risk neutral probability measure is possible. Studying the moments of the variance and certain stochastic exponentials, a suitable family of risk neutral probability measures is found. The established and practical method to compute reserves in life insurance is by solving Thiele's equation, which is crucial to guarantee the solvency of the insurance company.

Date: 2023-09, Revised 2024-02
New Economics Papers: this item is included in nep-ger
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