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Robust optimal investment and reinsurance for an insurer with inside information

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  • Peng, Xingchun
  • Chen, Fenge
  • Wang, Wenyuan

Abstract

This paper studies a robust optimal investment–reinsurance problem for an insurer who possesses inside information on the financial market and the insurance business under model uncertainty. The insurer’s surplus process and the risky asset process in the financial market are assumed to be correlated jump diffusion processes with random coefficients. The inside information is modelled by a general random variable related to the future realizations of the surplus process and the risky asset process. Under the criterion of expected utility maximization, the optimal investment–reinsurance problem with inside information is transformed into an adapted stochastic control problem. By incorporating Knightian uncertainty into the model, we establish an adapted stochastic differential game problem with a nonstandard performance functional, which aims to select the robust optimal investment–reinsurance strategy for the insurer with inside information. The stochastic maximum principles are adopted to derive a characterization of the optimal strategy. Some interesting special cases are discussed and the corresponding optimal strategies are derived.

Suggested Citation

  • Peng, Xingchun & Chen, Fenge & Wang, Wenyuan, 2021. "Robust optimal investment and reinsurance for an insurer with inside information," Insurance: Mathematics and Economics, Elsevier, vol. 96(C), pages 15-30.
    • Handle: RePEc:eee:insuma:v:96:y:2021:i:c:p:15-30
    DOI: 10.1016/j.insmatheco.2020.10.004
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    References listed on IDEAS

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    Cited by:

    1. Chao Yu & Yuhan Cheng, 2023. "Malliavin Calculus and Its Application to Robust Optimal Investment for an Insider," Mathematics, MDPI, vol. 11(20), pages 1-38, October.
    2. Shuang Li & Haijun Wang, 2023. "Robust irreversible investment strategy with ambiguity to jump and diffusion risk," International Review of Finance, International Review of Finance Ltd., vol. 23(3), pages 645-665, September.
    3. Rui Jiao & Wei Liu & Yijun Hu, 2023. "The Optimal Consumption, Investment and Life Insurance for Wage Earners under Inside Information and Inflation," Mathematics, MDPI, vol. 11(15), pages 1-18, August.

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