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Optimal Dynamic Reinsurance

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  • Dickson, David C.M.
  • Waters, Howard R.

Abstract

We consider a classical surplus process where the insurer can choose a different level of reinsurance at the start of each year. We assume the insurer’s objective is to minimise the probability of ruin up to some given time horizon, either in discrete or continuous time. We develop formulae for ruin probabilities under the optimal reinsurance strategy, i.e. the optimal retention each year as the surplus changes and the period until the time horizon shortens. For our compound Poisson process, it is not feasible to evaluate these formulae, and hence determine the optimal strategies, in any but the simplest cases. We show how we can determine the optimal strategies by approximating the (compound Poisson) aggregate claims distributions by translated gamma distributions, and, alternatively, by approximating the compound Poisson process by a translated gamma process.

Suggested Citation

  • Dickson, David C.M. & Waters, Howard R., 2006. "Optimal Dynamic Reinsurance," ASTIN Bulletin, Cambridge University Press, vol. 36(2), pages 415-432, November.
  • Handle: RePEc:cup:astinb:v:36:y:2006:i:02:p:415-432_01
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    Cited by:

    1. Ekaterina Bulinskaya & Julia Gusak & Anastasia Muromskaya, 2015. "Discrete-time Insurance Model with Capital Injections and Reinsurance," Methodology and Computing in Applied Probability, Springer, vol. 17(4), pages 899-914, December.
    2. Christian Hipp, 2018. "Company Value with Ruin Constraint in Lundberg Models," Risks, MDPI, vol. 6(3), pages 1-15, July.
    3. Zongxia Liang & Xiaodong Luo, 2024. "Stackelberg reinsurance and premium decisions with MV criterion and irreversibility," Papers 2402.11580, arXiv.org.
    4. Başak Bulut Karageyik & Şule Şahin, 2016. "Optimal Retention Level for Infinite Time Horizons under MADM," Risks, MDPI, vol. 5(1), pages 1-24, December.
    5. Dickson, David C.M., 2012. "The joint distribution of the time to ruin and the number of claims until ruin in the classical risk model," Insurance: Mathematics and Economics, Elsevier, vol. 50(3), pages 334-337.
    6. Başak Bulut Karageyik & Şule Şahin, 2017. "Determination of the Optimal Retention Level Based on Different Measures," JRFM, MDPI, vol. 10(1), pages 1-21, January.
    7. Anna Castañer & M. Claramunt & Maite Mármol, 2012. "Ruin probability and time of ruin with a proportional reinsurance threshold strategy," TOP: An Official Journal of the Spanish Society of Statistics and Operations Research, Springer;Sociedad de Estadística e Investigación Operativa, vol. 20(3), pages 614-638, October.

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