问题: describe how the relative roll-down return would change if the investor were to use an interpolated goverment benchmark rather than the actural 9.5 year gilt
答案是: roll-down return would be lower
老师的视频讲解里有个类似的题,是说用14.5年的债券换成15年的债券roll down,return 会更高,因为upward curve下,在一个更长期限下roll down, 久期越大,roll down returen 越高
这个题目, interpolated bond的年限并不明确,怎么确定是lower roll down return ?