Abstract
In this paper, we study optimal reinsurance/new business and investment (no-shorting) strategy for the mean-variance problem in two risk models: a classical risk model and a diffusion model. The problem is firstly reduced to a stochastic linear-quadratic (LQ) control problem with constraints. Then, the efficient frontiers and efficient strategies are derived explicitly by a verification theorem with the viscosity solutions of Hamilton–Jacobi–Bellman (HJB) equations, which is different from that given in Zhou et al. (SIAM J Control Optim 35:243–253, 1997). Furthermore, by comparisons, we find that they are identical under the two risk models.
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This work was supported by National Basic Research Program of China (973 Program) 2007CB814905 and National Natural Science Foundation of China (10571092).
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Bai, L., Zhang, H. Dynamic mean-variance problem with constrained risk control for the insurers. Math Meth Oper Res 68, 181–205 (2008). https://doi.org/10.1007/s00186-007-0195-4
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DOI: https://doi.org/10.1007/s00186-007-0195-4
Keywords
- Mean-variance
- Efficient frontier
- Efficient strategy
- Hamilton–Jacobi– Bellman equation
- Riccati equation
- Viscosity solution
- Lagrange multiplier