Optimal reinsurance and investment in a jump-diffusion financial market with common shock dependence

Optimal reinsurance and investment in a jump-diffusion financial market with common shock dependence
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具有共同冲击依赖性的跳跃扩散金融市场的最优再保险和投资

DOI:
10.1007/s12190-017-1119-y
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发表时间:
2018-02
影响因子:
2.2
通讯作者:
Caibin Zhang
Caibin Zhang
中科院分区:
数学3区
文献类型:
--
作者:
Zhibin Liang;Kam Chuen Yuen;Caibin Zhang

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本文研究了具有跳扩散风险资产的金融市场的最优再保险和投资问题。假设保险风险模型受复合Poisson过程的调制,风险资产和保险风险过程的跳跃通过一个共同的冲击相互关联。在期望指数效用最大化的准则下,我们采用非标准的方法来研究最优策略的存在性和唯一性。利用随机控制理论的技巧,不仅对期望值原理,而且对方差溢价原理,导出了最优策略和价值函数的闭式表达式。此外,我们还研究了常见的冲击参数以及其他一些重要的参数对最优策略的影响。特别是,一个数值例子表明,最优投资策略的共同冲击依赖程度的增加而减少,但最优保险自留水平并不表现出相同的。
In this paper, we study the optimal reinsurance and investment problem in a financial market with jump-diffusion risky asset. It is assumed that the insurance risk model is modulated by a compound Poisson process, and that the jumps in both the risky asset and insurance risk process are correlated through a common shock. Under the criterion of maximizing the expected exponential utility, we adopt a nonstandard approach to examine the existence and uniqueness of the optimal strategy. Using the technique of stochastic control theory, closed-form expressions for the optimal strategy and the value function are derived not only for the expected value principle but also for the variance premium principle. Also, we investigate the effect of the common shock parameter as well as some other important parameters on the optimal strategies. In particular, a numerical example shows that the optimal investment strategy decreases as the degree of common shock dependence increases but the optimal insurance retention level does not behave the same.
DOI: 10.1214/aoap/1031863173
发表时间: 2002-08
影响因子: 1.8
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