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Tammy · 2023年03月21日

可否有另一种算法?

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

reset的日期刚好是90天时,不是可以直接用return结算吗?不考虑本金的问题

1 个答案

Lucky_品职助教 · 2023年03月22日

嗨,爱思考的PZer你好:


公式左右两边都有notional amount $100 million,是可以约掉的~

----------------------------------------------
虽然现在很辛苦,但努力过的感觉真的很好,加油!

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