Time-consistent mean-variance strategy selection for claims dependent risk model
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Time-consistent mean-variance strategy selection for claims dependent risk model
Acta Scientiarum Naturalium Universitatis SunYatseniVol. 56, Issue 4, Pages: 28-37(2017)
作者机构:
1. 西京学院理学院,陕西,西安,710123
2.
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Published:2017,
Published Online:25 September 2017,
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YANG Peng, ZHANG Hairong. Time-consistent mean-variance strategy selection for claims dependent risk model. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 56(4):28-37(2017)
DOI:
YANG Peng, ZHANG Hairong. Time-consistent mean-variance strategy selection for claims dependent risk model. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 56(4):28-37(2017)DOI:
Time-consistent mean-variance strategy selection for claims dependent risk model
an optimal time-consistent strategy selection problem for claims dependent risk model is studied. The two claim number processes are correlated by a common Poisson process. The insurer can purchase reinsurance for reducing claims and invest its surplus in finance market for increasing wealth. In the process of investment
the effect of inflation is taken into account
and the effect of inflation is achieved through the conversion of the risk asset to the inflation rate. The objective of the insurer is to choose an optimal time-consistent reinsurance-investment strategy so as to maximize the expected terminal surplus while minimizing the variance of the terminal surplus. Since this problem is time-inconsistent
it is studied by placing the problem within a game theoretic framework. Applying Hamilton-Jacobi-Bellman dynamic programming approach
closed form solutions for the optimal reinsurance-investment strategy and the corresponding value functions are obtained. Finally
the influence of some insurance market model parameters on optimal reinsurance strategy is explained by numerical calculation
and the influence of financial market model parameters and inflation model parameters on optimal investment strategy are also given. Through this study
it can guide investors to make reasonable investment under the influence of inflation
so that their wealth is the largest and the smallest risk.