AN OPTIMAL CONSUMPTION AND INVESTMENT PROBLEM WITH PARTIAL INFORMATION

作者：Hata Hiroaki^*; Sheu Shuenn Jyi

来源：Advances in Applied Probability, 2018, 50(1): 131-153.

DOI：10.1017/apr.2018.7

• Optimal consumption and investment
• HARA utility
• stochastic factor model
• partial information
• Hamilton-Jacobi-Bellman equation

We consider a finite-time optimal consumption problem where an investor wants to maximize the expected hyperbolic absolute risk aversion utility of consumption and terminal wealth. We treat a stochastic factor model in which the mean returns of risky assets depend linearly on underlying economic factors formulated as the solutions of linear stochastic differential equations. We discuss the partial information case in which the investor cannot observe the factor process and uses only past information of risky assets. Then our problem is formulated as a stochastic control problem with partial information. We derive the Hamilton-Jacobi-Bellman equation. We solve this equation to obtain an explicit form of the value function and the optimal strategy for this problem. Moreover, we also introduce the results obtained by the martingale method.

• 出版日期2018-3
• 单位中央民族大学