NO.PZ2020033001000069
问题如下:
In the Vasicek model, if the current short-term rate equals 5.2% and the annual volatility of the interest rate process is 2%. The long-run mean- reverting level is assumed to be 12% with a speed of adjustment of 0.5. What are the upper and lower node rates after the first month in the binomial interest rate tree?
选项:
解释:
D is correct.
考点:Vasicek model
解析:
讲义上的公式後半部是σ*dw,李老师写的後半部是εσ*(dt)^,也就是说dw=ε*(dt)^
那这题题干为啥没给ε,而是直接让我们用σ*(dt)^来计算?