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Robust optimal excess-of-loss reinsurance and investment strategy for an insurer in a model with jumps

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  • Danping Li
  • Yan Zeng
  • Hailiang Yang

Abstract

This paper considers a robust optimal excess-of-loss reinsurance-investment problem in a model with jumps for an ambiguity-averse insurer (AAI), who worries about ambiguity and aims to develop a robust optimal reinsurance-investment strategy. The AAI’s surplus process is assumed to follow a diffusion model, which is an approximation of the classical risk model. The AAI is allowed to purchase excess-of-loss reinsurance and invest her surplus in a risk-free asset and a risky asset whose price is described by a jump-diffusion model. Under the criterion for maximizing the expected exponential utility of terminal wealth, optimal strategy and optimal value function are derived by applying the stochastic dynamic programming approach. Our model and results extend some of the existing results in the literature, and the economic implications of our findings are illustrated. Numerical examples show that considering ambiguity and reinsurance brings utility enhancements.

Suggested Citation

  • Danping Li & Yan Zeng & Hailiang Yang, 2018. "Robust optimal excess-of-loss reinsurance and investment strategy for an insurer in a model with jumps," Scandinavian Actuarial Journal, Taylor & Francis Journals, vol. 2018(2), pages 145-171, February.
    • Handle: RePEc:taf:sactxx:v:2018:y:2018:i:2:p:145-171
    DOI: 10.1080/03461238.2017.1309679
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    Cited by:

    1. Yuan, Yu & Han, Xia & Liang, Zhibin & Yuen, Kam Chuen, 2023. "Optimal reinsurance-investment strategy with thinning dependence and delay factors under mean-variance framework," European Journal of Operational Research, Elsevier, vol. 311(2), pages 581-595.
    2. Feng, Yang & Siu, Tak Kuen & Zhu, Jinxia, 2024. "Optimal payout strategies when Bruno de Finetti meets model uncertainty," Insurance: Mathematics and Economics, Elsevier, vol. 116(C), pages 148-164.
    3. Chen, Dengsheng & He, Yong & Li, Ziqiang, 2023. "Robust optimal reinsurance–investment for α-maxmin mean–variance utility under Heston’s SV model," The North American Journal of Economics and Finance, Elsevier, vol. 67(C).
    4. Yan Zhang & Peibiao Zhao & Rufei Ma, 2022. "Robust Optimal Excess-of-Loss Reinsurance and Investment Problem with more General Dependent Claim Risks and Defaultable Risk," Methodology and Computing in Applied Probability, Springer, vol. 24(4), pages 2743-2777, December.
    5. Tong Qian & Cuixia Chen & Weijun Yin & Bing Liu, 2024. "Optimal Investment-reinsurance Strategies for an Insurer with Options Trading Under Model Ambiguity," Methodology and Computing in Applied Probability, Springer, vol. 26(4), pages 1-21, December.
    6. Qiang Zhang & Qianqian Cui, 2024. "Robust Investment and Proportional Reinsurance Strategy with Delay and Jumps in a Stochastic Stackelberg Differential Game," Methodology and Computing in Applied Probability, Springer, vol. 26(4), pages 1-34, December.

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