我的笔记上有一句话我不太理解,麻烦老师解释一下。
“one-side duration is better than effective duration or two-side duration at capturing the interest rate sensitivity of a callable or putable bond but only for a parallel shift in the yield curve, not for changes in the shape of the yield curve." 加粗部分不太理解,为什么one-side duration只在平行移动的时候有效,对于yield curve的改变无效。意思是如果利率同时上升或下降,只对于含权债券的一边有影响,但是如果整个yield curve都发生改变就无法比较了,是这个意思吗