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On stochastic optimal reinsurance and investment strategies for the surplus under the CEV model

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It is important to find an optimal strategy which maximizes the surplus of the insurance company at the maturity time T. The purpose of this paper is to give an explicit expression for the optimal reinsurance and investment strategy, under the CEV model, which maximizes the expected exponential utility of the final value of the surplus at T. To do this optimization problem, the corresponding Hamilton-Jacobi-Bellman equation will be transformed a linear partial differential equation by applying a Legendre transform.

Abstract

It is important to find an optimal strategy which maximizes the surplus of the insurance company at the maturity time T. The purpose of this paper is to give an explicit expression for the optimal reinsurance and investment strategy, under the CEV model, which maximizes the expected exponential utility of the final value of the surplus at T. To do this optimization problem, the corresponding Hamilton-Jacobi-Bellman equation will be transformed a linear partial differential equation by applying a Legendre transform.

참고문헌 (12)

  1. T. Björk, "Arbitrage Theory in Continuous Time" (1998), Oxford Univ. Press
  2. P. Devolder, "Stochastic optimal control of annuity con-tracts", Insurance Math. Econom, 33, pp.227~238 (2003)
  3. J. Gao, "Optimal investment strategy for annuity contracts under the constant elasticity of variance (CEV) model", Insuance Math. Econom, 45, pp.9~18 (2009)
  4. M. Gu, "Constant elasticity of variance model for pro-portional reinsurance and investment strategies", Insuance Math. Econom, 46, pp.580~587 (2010)
  5. C. Hipp, "Optimal investment for insurers", Insurance Math. Econom, 27, pp.215~228 (2000)
  6. B. Højgaad, "Optimal proportional reinsurance policies for diffusion mod-els with transaction costs", Insuance Math. Econom, 22, pp.41~51 (1998)
  7. M. Jonsson, "Optimal investment problems and volatility homogenization approximations, In NATO Science Series II, Vol.75", pp.255~281 (2002), Kluwer
  8. 김재희, "On stochastic optimal reinsurance and investment strategies for the surplus", 강원경기수학회지, 16(2), pp.145~156 (2008), 강원경기수학회
  9. S. Luo, "On reinsurance and investment for large insurance portfolios", Insurance Math. Econom, 42, pp.434~444 (2007)
  10. B.øksendal, "Stochastic Differential Equations" (1998), Springer-Verlag Berlin Heidelberg
  11. H. Schmidli, "Optimal proportional reinsurance policies in a dynamic setting", Scan. Actuarial J, (1), pp.55~68 (2001)
  12. M. Taksar, "Optimal dynamic reinsurance policies for large insurance portfolios", Finance and Stochastics, 7, pp.97~121 (2003)

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