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Equilibrium Policy on Dividend and Capital Injection under Time-inconsistent Preferences

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  • Sang Hu
  • Zihan Zhou

Abstract

This paper studies the dividend and capital injection problem under a diffusion risk model with general discount functions. A proportional cost is imposed when injecting capitals. For exponential discounting as time-consistent benchmark, we obtain the closed-form solutions and show that the optimal strategies are of threshold type. Under general discount function which leads to time-inconsistency, we adopt the definition of weak equilibrium and obtain the extended HJB equation system. An explicit solution is derived under pseudo-exponential discounting where three cases of the dividend and capital injection thresholds are obtained. Numerical examples show that large capital injection cost may lead to no capital injection at all, while larger difference in group discount rate leads to higher equilibrium value function.

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  • Sang Hu & Zihan Zhou, 2025. "Equilibrium Policy on Dividend and Capital Injection under Time-inconsistent Preferences," Papers 2505.23511, arXiv.org.
    • Handle: RePEc:arx:papers:2505.23511
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    References listed on IDEAS

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