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An Investment and Consumption Problem with CIR Interest Rate and Stochastic Volatility

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  • Hao Chang
  • Xi-min Rong

Abstract

We are concerned with an investment and consumption problem with stochastic interest rate and stochastic volatility, in which interest rate dynamic is described by the Cox‐Ingersoll‐Ross (CIR) model and the volatility of the stock is driven by Heston’s stochastic volatility model. We apply stochastic optimal control theory to obtain the Hamilton‐Jacobi‐Bellman (HJB) equation for the value function and choose power utility and logarithm utility for our analysis. By using separate variable approach and variable change technique, we obtain the closed‐form expressions of the optimal investment and consumption strategy. A numerical example is given to illustrate our results and to analyze the effect of market parameters on the optimal investment and consumption strategies.

Suggested Citation

  • Hao Chang & Xi-min Rong, 2013. "An Investment and Consumption Problem with CIR Interest Rate and Stochastic Volatility," Abstract and Applied Analysis, John Wiley & Sons, vol. 2013(1).
    • Handle: RePEc:wly:jnlaaa:v:2013:y:2013:i:1:n:219397
    DOI: 10.1155/2013/219397
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    References listed on IDEAS

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    Cited by:

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