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ttldxl · 2019年05月07日
这道题是因为题目中说的是普通债券,所以可以认为modified duration=approximate modified duration吗?
问题如下图:
选项:
A.
B.
C.
解释:
吴昊_品职助教 · 2019年05月07日
是的。对于不含权债券来说,approximate MD和MD几乎是一样的。因为无论是站在事前,用求导的方式求duration,还是站在事后,通过观察到的价格变动率反求一个敏感程度,对于不含权债券来说是一样的。
NO.PZ2018062006000132问题如下 annucoupon bonis pricepvalue, the coupon rate is 5%, anthere are 10 years to its maturity from now. Suppose the investment horizon is 5 years anthe approximate mofieration of the bonis 6.872. the time of purchase, the ration gshoulbe:A.-2.22B.1.87C.2.22 C is correct.the bonis priceits pvalue, the YTM equals to its coupon rate, whiis 5%.The approximate Macaulration = the approximate mofieration × (1+ yielto-maturity) = 6.872× 1.05 = 7.2156ration g= Macaulration - investment horizon = 7.2156-5 = 2.2156考点ration gap解析ration g= Macaculration - investment horizon = Mofieration × (1+y) - investment horizon = 6.872 × 1.05 - 5 = 2.2156,故C正确。 我怎么对ration g没有印象呢