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Minimization of risks in defined benefit pension plan with time‐inconsistent preferences

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  • Qian Zhao
  • Rongming Wang
  • Jiaqin Wei

Abstract

In this paper, we investigate the defined benefit pension plan, where the object of the manager is to minimise the contribution rate risk and the solvency risk by considering a quadratic performance criterion. To incorporate some well‐documented behavioural features of human beings, we consider the situation where the discounting is non‐exponential. It leads to a time‐inconsistent control problem in the sense that the Bellman optimality principle does no longer hold. In our model, we assume that the benefit outgo is constant, and the pension fund can be invested in a risk‐free asset and a risky asset whose return follows a geometric Brownian motion. We characterise the time‐consistent strategies and value function in terms of the solution of a system of integral equations. The existence and uniqueness of the solution is verified, and the approximation of the solution is obtained. Some numerical results of the equilibrium contribution rate and equilibrium investment policy are presented for three types of discount functions. Copyright © 2015 John Wiley & Sons, Ltd.

Suggested Citation

  • Qian Zhao & Rongming Wang & Jiaqin Wei, 2016. "Minimization of risks in defined benefit pension plan with time‐inconsistent preferences," Applied Stochastic Models in Business and Industry, John Wiley & Sons, vol. 32(2), pages 243-258, March.
    • Handle: RePEc:wly:apsmbi:v:32:y:2016:i:2:p:243-258
    DOI: 10.1002/asmb.2148
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    Cited by:

    1. Josa-Fombellida, Ricardo & Navas, Jorge, 2020. "Time consistent pension funding in a defined benefit pension plan with non-constant discounting," Insurance: Mathematics and Economics, Elsevier, vol. 94(C), pages 142-153.

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