讓同學
2021-11-10 21:30押題,固收 Case5 convexity這里的好處我沒看懂,或者說這算什么好處?看原文說dispersion在衡量structural risk的時候有l(wèi)imitation,又是什么limitation呢?
所屬:CFA Level III > Fixed-Income Portfolio Management 視頻位置 相關(guān)試題
來源: 視頻位置 相關(guān)試題
1個回答
Chris Lan助教
2021-11-11 10:37
該回答已被題主采納
同學你好
可以進行加權(quán)平均計算組合的convexity這也是優(yōu)點,因為計算簡單。
限制是如果組合里都是零息債,那就個債來看現(xiàn)金流就沒有dispersion,但這個組合整體來看,還是有多個不同時點上的零息債合成,整體組合又是有現(xiàn)金流dispersion的。
原文如下
A problem with estimating portfolio dispersion using the dispersion statistics for individual bonds is that it can be misleading. Consider a portfolio of all zero-coupon bonds of varying maturities. Each individual bond has zero dispersion (because it has only one payment), so the market value weighted average is also zero. Clearly, the portfolio overall can have significant (non-zero) dispersion.
