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1 results

  • Optimal allocation of policy limits in layer reinsurance treaties

  • Part of
  • Chuchu Wang, Wei Wang, Yiying Zhang, Peng Zhao
  • Journal:
    Probability in the Engineering and Informational Sciences / Volume 37 / Issue 2 / April 2023
    Published online by Cambridge University Press:
    24 November 2022, pp. 546-566
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  • Layer reinsurance treaty is a common form obtained in the problem of optimal reinsurance design. In this paper, we study allocations of policy limits in layer reinsurance treaties with dependent risks. We investigate the effects of orderings and heterogeneity among policy limits on the expected utility functions of the terminal wealth from the viewpoint of risk-averse insurers faced with right tail weakly stochastic arrangement increasing losses. Orderings on optimal allocations are presented for normal layer reinsurance contracts under certain conditions. Parallel studies are also conducted for randomized layer reinsurance contracts. As a special case, the worst allocations of policy limits are also identified when the exact dependence structure among the losses is unknown. Numerical examples are presented to shed light on the theoretical findings.