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dognmnm · 2023年03月07日

over-hedge AUD and not hedge CHF

NO.PZ2018111501000021

问题如下:

Fundo do Brasil (FB) is a Brazilian sovereign wealth fund. FB has long equity positions in Australian and Swiss equities. Spot and forward market currency information for AUD and CHF is provided in Exhibit 1. FB managers have asked Campos for advice on whether it would be appropriate to hedge the currency exposure with forward contracts in AUD and CHF. Campos indicates she will examine the use of forward contracts to hedge currency exposure.

Based on the information provided in Exhibit 1, the most appropriate risk neutral strategy is for FB to:

选项:

A.

under-hedge AUD and over-hedge CHF.

B.

over-hedge AUD and not hedge CHF.

C.

under-hedge CHF and not hedge AUD.

解释:

B is correct.

考点:Tools of Currency Management: Forward

解析:用forward contracts对冲外汇风险,对冲的是卖AUDCHF的外汇风险,所以将来是short AUD forward, short CHF forward。相比预测的未来6个月的汇率(即不用合约锁定的汇率),2.1523>2.0355,所以应当hedge AUD,锁定更高的卖AUD的价格。并且over-hedge可以带来更高的收益。对于BRL/CHF2.4641<2.5642, 所以不hedge时,卖CHF的价格更高。

如果我把选项改成: over-hedge AUD and under hedge CHF对吗?

讲义都只有讲到hedge and unhedge, 有underhedge吗

underhedge是风险更大但收益更多吗?

2 个答案

Hertz_品职助教 · 2023年03月08日

嗨,从没放弃的小努力你好:


Under hedge,是仍然对冲的,只不过对冲比率小于1;

not hedge顾名思义就是压根不对冲。

这两个一个是对冲一个是不对冲,有本质区别。

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Hertz_品职助教 · 2023年03月08日

嗨,努力学习的PZer你好:


同学你好

同学的思考其实是很好的,对于AUD肯定是对冲,而且在IPS允许范围内,over hedge是最好的。

 

有over hedge就对应的有under hedge。

Over hedge和under hedge一般是相较于100%对冲而言的,百分百对冲也叫作fully hedge。

在IPS允许的范围内,比如IPS允许上下浮动25%。则over hedge就是指的对冲比例超过100%;对应的under hedge就是对冲比例小于100%,比如是75%的对冲比例。

那如果本题这个情景,然后加上IPS允许对冲比例有上下25%的比例,则对于CHF头寸来说:under hedge肯定是比百分百对冲有更大好处的。收益和风险是同时存在的,高收益必然意味着需要承担更高的风险。

 

最后回到同学的假设,假设有同学说的这个选项,那么同学假设的这个选项和现在的B选项其实都是可以的,就要看看有没有其他的信息了,比如投资者不允许完全不对冲的情况发生,在这种情况下就应该选同学假设的选项。

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