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Angela · 2021年04月05日

关于equity leg 求value

NO.PZ2019010402000011

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:

Assume the equity index is currently trading at 101, the value of the swap is:

选项：

A.

320,450

B.

246,337

C.

-246,337

解释：

C is correct.

考点：equity swap求value.

解析：

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equity leg来说，我们可以根据价格水平直接计算现在的value。

${\text{value}}_{equity}=(101/100)\times100,000,000=101,000,000$

对于fixed leg来说，我们只用将三笔现金流折现即可。

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

Value of swap=-101,000,000+100,753,663=-246,337

Value Equity =(101/100)×100,000,000=101,000,000，不太理解，为什么直接用101/100乘以本金就是equity部分的value？

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WallE_品职答疑助手 · 2021年04月06日

嗨，爱思考的PZer你好：

101/100=1.01=101%代表股票现在价格是当时买的价格的101%。在举个例子你买的时候100块钱，现在200块钱，那么你的收益率就是200/100=200% 你在乘以本金就是你现在持有股票的市值。

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就算太阳没有迎着我们而来，我们正在朝着它而去，加油！

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