02:50 (2X)
“independent yield and duration, assuming constant yield and duration , 这里不是hedge liability么, 应该convex 小才对,如果是active management肯定是convexity好, 怎么判断,给的信息点很少
发亮_品职助教 · 2024年02月04日
是的哈,这道Mock题出的不好。这道题原本大的背景是hedge liability,但是这一小问似乎是脱离了hedge liability,单纯讨论convexity的特征。这道题答案看一下即可。
观察官方的答案,就单纯地在回复convexity的基本特性,如,Convexity是债券的优质属性,其他条件一致,Higher convexity的债券表现更好(as compared to a bond with lower convexity, a bond with higher convexity tends to appreciate more when interest rates decline and depreciates less when interest rates rise)。
和这道题convexity相关的点:
1、Convexity是债券的优质属性,利率改变时涨多跌少,无论是hedge liability,还是做Active management,这个优质属性都不改变
2、在做Hedge liability时,虽然Convexity越大优质属性越多,但是hedge liability不是追求涨多跌少,而是追求与Liability的Match,所以,Asset的convexity要与Liability的Convexity尽可能大小一致,具体表现就是,单期负债Match时,Asset的convexity要最小化;多期负债Match时,Asset的convexity先要大于Liability convexity,然后在此基础上最小化
3、Active management预期是利率波动时,追求Convexity最大化