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Investment–consumption with regime-switching discount rates

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  • Pirvu, Traian A.
  • Zhang, Huayue

Abstract

This paper considers the problem of consumption and investment in a financial market within a continuous time stochastic economy. The investor exhibits a change in the discount rate. The investment opportunities are a stock and a riskless account. The market coefficients and discount factor switch according to a finite state Markov chain. The change in the discount rate leads to time inconsistencies of the investor’s decisions. The randomness in our model is driven by a Brownian motion and a Markov chain. Following Ekeland and Pirvu (2008) we introduce and characterize the subgame perfect strategies. Numerical experiments show the effect of time preference on subgame perfect strategies and the pre-commitment strategies.

Suggested Citation

  • Pirvu, Traian A. & Zhang, Huayue, 2014. "Investment–consumption with regime-switching discount rates," Mathematical Social Sciences, Elsevier, vol. 71(C), pages 142-150.
    • Handle: RePEc:eee:matsoc:v:71:y:2014:i:c:p:142-150
    DOI: 10.1016/j.mathsocsci.2014.07.001
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    References listed on IDEAS

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    Cited by:

    1. Huiling Wu & Chengguo Weng & Yan Zeng, 2018. "Equilibrium consumption and portfolio decisions with stochastic discount rate and time-varying utility functions," OR Spectrum: Quantitative Approaches in Management, Springer;Gesellschaft für Operations Research e.V., vol. 40(2), pages 541-582, March.
    2. Fahrenwaldt, Matthias Albrecht & Jensen, Ninna Reitzel & Steffensen, Mogens, 2020. "Nonrecursive separation of risk and time preferences," Journal of Mathematical Economics, Elsevier, vol. 90(C), pages 95-108.
    3. Tao, Cheng & Rong, Ximin & Zhao, Hui, 2023. "Stochastic control with inhomogeneous regime switching: Application to consumption and investment with unemployment and reemployment," Journal of Mathematical Economics, Elsevier, vol. 107(C).
    4. Wang Chunfeng & Chang Hao & Fang Zhenming, 2017. "Optimal Consumption and Portfolio Decision with Heston’s SV Model Under HARA Utility Criterion," Journal of Systems Science and Information, De Gruyter, vol. 5(1), pages 21-33, February.
    5. Tomas Björk & Mariana Khapko & Agatha Murgoci, 2017. "On time-inconsistent stochastic control in continuous time," Finance and Stochastics, Springer, vol. 21(2), pages 331-360, April.
    6. Oumar Mbodji & Traian A. Pirvu, 2023. "Portfolio Time Consistency and Utility Weighted Discount Rates," Papers 2402.05113, arXiv.org.
    7. Yu-Jui Huang & Zhou Zhou, 2021. "Strong and Weak Equilibria for Time-Inconsistent Stochastic Control in Continuous Time," Mathematics of Operations Research, INFORMS, vol. 46(2), pages 428-451, May.

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