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In this paper, the optimal investment problem for an agent with dual risk model is studied. The financial market is assumed to be a diffusion process with the coefficients modulated by an external process, which is specified by the solution to a kind of stochastic differential equation. The object of the agent is to maximize the expected utility from terminal wealth. Together with the regularity property of the value function, by dynamic programming principle, the value function of our control problem is turned to be the unique solution to the associated Hamilton-Jacob-Bellman HJB for short equation. When the utility is an exponential function with constant risk aversion, close form expressions for value function and optimal investment policy are obtained.

KEYWORDS

Optimal Investment, Dual Risk Model, Markov Modulated Model, HJB Equation

Cite this paper

Xu, L. , Zhang, L. and Zhu, D. 2015 Optimal Investment under Dual Risk Model and Markov Modulated Financial Market. Journal of Mathematical Finance, 5, 157-171. doi: 10.4236-jmf.2015.52015.





Autor: Lin Xu, Liming Zhang, Dongjin Zhu

Fuente: http://www.scirp.org/



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