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Pension funding problem with regime‐switching geometric Brownian motion assets and liabilities

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  • Ping Chen
  • Hailiang Yang

Abstract

This paper extends the pension funding model in (N. Am. Actuarial J. 2003; 7:37–51) to a regime‐switching case. The market mode is modeled by a continuous‐time stationary Markov chain. The asset value process and liability value process are modeled by Markov‐modulated geometric Brownian motions. We consider a pension funding plan in which the asset value is to be within a band that is proportional to the liability value. The pension plan sponsor is asked to provide sufficient funds to guarantee the asset value stays above the lower barrier of the band. The amount by which the asset value exceeds the upper barrier will be paid back to the sponsor. By applying differential equation approach, this paper calculates the expected present value of the payments to be made by the sponsor as well as that of the refunds to the sponsor. In addition, we study the effects of different barriers and regime switching on the results using some numerical examples. The optimal dividend problem is studied in our examples as an application of our theory. Copyright © 2009 John Wiley & Sons, Ltd.

Suggested Citation

  • Ping Chen & Hailiang Yang, 2010. "Pension funding problem with regime‐switching geometric Brownian motion assets and liabilities," Applied Stochastic Models in Business and Industry, John Wiley & Sons, vol. 26(2), pages 125-141, March.
    • Handle: RePEc:wly:apsmbi:v:26:y:2010:i:2:p:125-141
    DOI: 10.1002/asmb.776
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    References listed on IDEAS

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