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hyi725 · 2021年07月28日

请问如何判断题目给的是1年期spot rate还是n年期的折现率

NO.PZ2018123101000062

问题如下:

Bond D is a 3-year annual pay bond with a coupon rate of 3%.

Alvarez calculates the possible interest rate paths for Bond D shown in the Exhibit below.

Based on the Exhibit, the present value of Bond D’s cash flows following Path 2 is closest to:

选项:

A.

97.0322.

B.

102.8607.

C.

105.8607.

解释:

B is correct.

考点:Interest rate path的理解

解析:

题干给出了4条不同的利率路径,现在需要计算的是在利率路径2下,债券D的价值;利率路径给定的是在不同时间节点的远期利率1-year forward rate,因此我们直接应用远期利率1-year forward rate对债券进行折现;

31.015+3(1.015)×(1.028853)+103(1.015)×(1.028853)×(1.016487)=102.8607\frac3{1.015}+\frac3{(1.015)\times(1.028853)}+\frac{103}{(1.015)\times(1.028853)\times(1.016487)}=102.8607

不知道在什么情况下需要把几个rates相乘算 还是直接用题目给的利率算?

1 个答案

WallE_品职答疑助手 · 2021年07月30日

嗨,爱思考的PZer你好:


题目里面说了 interest rate paths 

就和二叉树里面说的interest rate paths 一个意思,都是1year forward rate因此要一年一年的从后往前折现。


如果是spot rate会明说的

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