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临江仙 · 2023年10月15日

为什么在T时刻用T时刻的汇率将港币换为欧元呢

NO.PZ2023020101000018

问题如下:

Whitney meets with Grand Manufacturing. This client is based in Hong Kong but requires a €25,000,000 one-year bridge loan to fund operations in Germany. Grand Manufacturing is currently able to borrow euros at an interest rate of 3.75% but wonders if there is a less expensive alternative. Whitney advises Grand to borrow in HK$ and enter into a one-year foreign currency swap with quarterly payments to receive euros at a fixed rate and pay HK$ at a fixed rate. The current exchange rate is HK$11.42 per €1, and the notional amounts will be exchanged at initiation and at maturity.The annualized rate is 2.3181% for Euros and 1.8550% for HK$.

Ninety days have passed since Whitney’s initial meetings, and in the interim interest rates have increased dramatically. Whitney’s clients have asked to meet with her to review their positions.

In order to prepare for the meeting, Whitney has obtained updated interest rate data that is presented in Exhibit 2. In addition, she determines that the exchange rate for the Hong Kong dollar is HK$9.96 per €1, and the US stock index is at 905Exhibit 2: Present Value Factors Based on Current Australian Term Structure.

Exhibit 2 Term Structure of Rates 90 Days Later (%)

Note: Euribor is Euro Interbank Offered Rate. Hibor is the Hong Kong Interbank Offered Rate. All rates shown are annualized

Using the data in Exhibit 2, the market value of Grand Manufacturing’s swap after 90 days is closest to:

选项:

A.

–€4,103,142

B.

€2,701,178

C.

–€3,625,900

解释:

Grand borrows HK$285,500,000 and exchanges it for €25,000,000 based on the initial exchange rate of HK$11.42 per euro.

Grand will pay an interest rate of 1.8550% on the borrowed HK dollars and earn 2.3181% on the lent/invested euros.

Ninety days into the swap, the exchange rate is HK$9.96, and the PV factors are:

Va=NAa,0(rFIX,a,0i=1nPVt,ti,a+PVt,tn,a)S0NAb,0(rFIX,b,0i=1nPVt,ti,b+PVt,tn,b)V_a=NA_{a,0}(r_{FIX,a,0}\sum_{i=1}^nPV_{t,t_i,a}+PV_{t,t_n,a})-S_0NA_{b,0}(r_{FIX,b,0}\sum_{i=1}^nPV_{t,t_i,b}+PV_{t,t_n,b})

=€25,000,000×[0.005795(2.9552)+0.977422] -285,500,000/HK$/€9.96×[0.004637(2.9632)+0.980152]

=€24,863,685-€28,489,585=-€3,625,900

有点混淆了。

对于currency swap,在T时刻,什么时候用T=0时候的汇率,什么时候用T时候的汇率

1 个答案
已采纳答案

pzqa35 · 2023年10月16日

嗨,努力学习的PZer你好:


对于汇率的考量,我们需要先来理一下货币互换的思路:假设我们作为中国的公司,需要去美国进行经营,我们需要美元的借款,那我们就可以先按照比较优势,在中国的银行借人民币,然后再进入到一个收人民币,支付美元的互换,就可以达到我的目标。

那么在这个互换的开始,也就是0时刻,我是需要进行本金互换的,假设期初的汇率是S0 CNY/USD,那么1块钱的美元可以换S0的人民币,那我就是收到1美元,同时支付了S0的人民币,S0就是我人民币的名义本金。

在互换中,我会支付美元的利息,收到人民币的利息,所以在计算人民币的利息时,需要按照S0的本金来计算,美元则是按照1的本金来计算利息。

在期末,我还是要按照S0来交换本金,即我会收到S0的人民币,同时支付1美元。这是因为在我整个互换的过程中,我的人民币和美元本金都没有离开过各自的国家,所以我只需要偿还期初借的本金即可。

在计算t时刻的value时,我们需要用向上的箭头减去向下的箭头,即用人民币的价值减去美元的价值,但此时因为币种差异,我们不可以直接做差,而是要将美元转化称人民币,那么此时需要使用的汇率就是St

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

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