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梦梦 · 2024年06月08日

annulized 6 month rate到底是什么意思?

NO.PZ2019052801000035

问题如下:

Assume that the annualized 6-month spot rate is 5.2%, the 1-year spot rate is unknown, both spots are continuously compounded rates. A $100 face value, 1-year, 6% semiannual bond is priced at $97.83. Calculate the 1-year spot rate:

选项:

A.

7.63%

B.

8.18%

C.

9.21%

D.

10.96%

解释:

B is correct.

考点:Interest Rate

解析:

annualized 6-month spot rate表示为 Z1Z_1,1-year spot rate Z2Z_2

B=3×e[(Z1/2)×1]+103×e[(Z2/2)×2]B=3\times e^{\lbrack{(-Z_1/2)}\times1\rbrack}+103\times e^{\lbrack{(-Z_2/2)}\times2\rbrack};

$97.83=3×e[(0.052/2)×1]+103×e[(Z2/2)×2]\$97.83=3\times e^{\lbrack{(-0.052/2)}\times1\rbrack}+103\times e^{\lbrack{(-Z_2/2)}\times2\rbrack};

Z2=0.081832=8.18%Z_2=0.081832=8.18\%

老师好,annulized 6 month rate 5.2%,这个英文意思不是“年化的6个月利率”?我理解也就是把年化利率除以2了,难道不是这么理解吗?如果是年化利率不应该直接表达为“annulized rate”?如果是这样表达,我觉得6个月的利率应该是除以2的。

2 个答案

李坏_品职助教 · 2024年06月11日

嗨,努力学习的PZer你好:


对的。

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梦梦 · 2024年06月11日

好的,谢谢

李坏_品职助教 · 2024年06月09日

嗨,从没放弃的小努力你好:


只要题目给的利率,都是年化利率。annualized 6 month rate意思是:在0-6这个时间段的年化利率为5.2%.


但是在折现的时候,要把题目给的年化利率5.2%除以2。


题目也有可能给出annualized 3 month rate,那就是0-3这个时间段的年化利率为5.2%,到时候就要除以4。

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加油吧,让我们一起遇见更好的自己!

梦梦 · 2024年06月11日

哦哦,原来是这个意思,也就是虽然题目跟着具体时间,比如6month,3month 的annulized interest rate,并不是已经去年化,还是年化利率,对吧?

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