Investment and consumption in regime-switching models with proportional transaction costs and log utility

Jiapeng Liu; Ruihua Liu; Dan Ren

doi:10.3934/mcrf.2017017

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2017, Volume 7, Issue 3: 465-491. Doi: 10.3934/mcrf.2017017

This issue Previous Article Existence of optimal solutions to lagrange problem for a fractional nonlinear control system with riemann-liouville derivative Next Article On the existence of optimal control for semilinear elliptic equations with nonlinear neumann boundary conditions

Investment and consumption in regime-switching models with proportional transaction costs and log utility

1.
School of Economics and Management, China Jiliang University, 258 Xueyuan Road, Hangzhou, Zhejiang 310018, China
2.
Department of Mathematics, University of Dayton, 300 College Park, Dayton, OH 45469-2316, USA

* Corresponding author: Ruihua Liu
* Corresponding author: Ruihua Liu

Received: August 2016

Revised: October 2016

Published: October 2017

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Abstract

A continuous-time and infinite-horizon optimal investment and consumption model with proportional transaction costs and regime-switching was considered in Liu [4]. A power utility function was specifically studied in [4]. This paper considers the case of log utility. Using a combination of viscosity solution to the Hamilton-Jacobi-Bellman (HJB) equation and convex analysis of the value function, we are able to derive the characterizations of the buy, sell and no-transaction regions that are regime-dependent. The results generalize Shreve and Soner [6] that deals with the same problem but without regime-switching.

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Mathematics Subject Classification: Primary: 91G80, 93E20; Secondary: 60H30.

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References

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