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Chloe · 2024年03月14日

请问0.25时刻的coupon为什么没有算进去

NO.PZ2019010402000012

问题如下:

A manger entered into a receive-fixed and pay-equity swap three months ago. The annualized fixed rate is 3% and equity index was at 100 when swap was entered. The maturity of swap is one year with quarterly reset, and notional amount is $100 million. The current spot rates are as follows:

The value of this equity swap would be zero if the equity index level is:

选项:

A.

100.753630

B.

100

C.

99.753630

解释:

A is correct.

考点:equity swap求value

解析:

已知value=0,反求此时equity index的价格。

首先画图:

一年期的swap,3个月之前进入的,所以时间轴如下,还剩3笔现金流。

对于fixed leg来说,我们只用将三笔现金流折现即可。

Valuefixedleg=3%×(90360)×100000000×(0.997506+0.992556+0.985222)+100,000,000×0.985222=100,753,663Value_{fixedleg=}3\%\times(\frac{90}{360})\times100000000\times(0.997506+0.992556+0.985222) +100,000,000\times0.985222\\=100,753,663

将现在index的价格设为X,那么equity leg的价值=X/100*100,000,000

头寸是付equity return收固定,所以value of swap=- X/100*100,000,000+100,753,630=0

可计算出X=100.753630

在reset date,需要做netting。既然需要算Pt,那说明coupon还没有支付。这个逻辑的漏洞在哪里

1 个答案

李坏_品职助教 · 2024年03月14日

嗨,努力学习的PZer你好:


netting和Pt与是否支付coupon没有必然联系。


这道题是站在0.25这个时刻,这个也就是默认是0.25期末,后续只有3笔现金流了。这个也是CFA出题的惯例,站在某个时刻指的是该时刻的期末,也就不用考虑0.25的coupon了。

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努力的时光都是限量版,加油!

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