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An Investment and Consumption Problem with CIR Interest Rate and Stochastic Volatility
oleh: Hao Chang, Xi-min Rong
| Format: | Article |
|---|---|
| Diterbitkan: | Hindawi Limited 2013-01-01 |
Deskripsi
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.