Logarithm utility portfolio for asset and liability management with stochastic interest rates
Hao Chang, Kai Chang
Abstract
Hao Chang, Kai Chang
Abstract
This paper applies the maximum principle to obtain Hamilton-Jocabi-Bellman (HJB) equation for the asset and liability management problem under stochastic interest rate. And the optimal investment strategies under the Ho-Lee model and the Vasicek model are investigated respectively. Logarithm utility function is taken as the risky preference of investors and the closed-form solutions of the optimal investment strategy are derived via adopting Legendre transform approach.
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This paper applies the maximum principle to obtain Hamilton-Jocabi-Bellman (HJB) equation for the asset and liability management problem under stochastic interest rate. And the optimal investment strategies under the Ho-Lee model and the Vasicek model are investigated respectively. Logarithm utility function is taken as the risky preference of investors and the closed-form solutions of the optimal investment strategy are derived via adopting Legendre transform approach.
Key concepts: Vasicek model, Hamilton–Jacobi–Bellman equation, Logarithm, Interest rate, Legendre transformation, Short-rate model, Investment strategy, Portfolio