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黑仔君。 · 2023年02月10日

B选项

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NO.PZ201601050100000303

问题如下:

3. Which of the following market developments would be most favorable for Subscriber 3's trading plan?

选项:

A.

A narrower interest rate differential.

B.

A higher forward premium for INR/USD.

C.

Higher volatility in INR/USD spot rate movements.

解释:

B is correct.

Subscriber 3's carry trade strategy is equivalent to trading the forward rate bias, based on the historical evidence that the forward rate is not the center of the distribution for the spot rate. Applying this bias involves buying currencies selling at a forward discount and selling currencies trading at a forward premium. So a higher forward premium on the lower yielding currencythe USD, the base currency in the INR/USD quotewould effectively reflect a more profitable trading opportunity. That is, a higher premium for buying or selling the USD forward is associated with a lower US interest rate compared to India. This would mean a wider interest rate differential in favor of Indian instruments, and hence potentially more carry trade profits.

A is incorrect because Subscriber 3's carry trade strategy depends on a wide interest rate differential between the high-yield country (India) and the low-yield country (the United States). The differential should be wide enough to compensate for the unhedged currency risk exposure.

C is incorrect because a guide to the carry trade‘s riskiness is the volatility of spot rates on the involved currencies, with rapid movements in exchange rates often associated with a panicked unwinding of carry trades. All things being equal, higher volatility is worse for carry trades.

中文解析:

B选项:higher forward premium或者表述为larger forward premium,是两国利差变大的意思,所以在carry trade中看到这个表述就直接等同为两国利差变大。

可以从下面这个角度来理解:

(1)我们可以用covered interest rate parity(抛补的利率平价公式)来解释,根据. covered interest rate parity:F/S0=(1+r_A)/(1+r_B) (汇率标价形式为A/B); 其中r_A

(2)得到F

(3)所以,如果F/S0=(1+r_A)/(1+r_B)这个公式中r_A

2. 执行carry trade的条件有二,一是两国利差大,二是汇率变化很小。因此A选项和C选项的表述是错误的

不对啊,专门讲过roll yield,这b选项不就导致roll yield是小于0么,那这样成本就变大了不是不利么

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已采纳答案

lynn_品职助教 · 2023年02月12日

嗨,努力学习的PZer你好:


不对啊,专门讲过roll yield,这b选项不就导致roll yield是小于0么,那这样成本就变大了不是不利么


roll yield 和这里不一样,要区分开。


1、roll yield:


首先呢,正如讲义上写的roll yield=forward premium/discount,这个是基于公式来讲的,在外汇管理中,我们一般是持有外币资产,所以做得是short forward 头寸,这时计算roll yield=F-S/S,这个公式也是计算forward premium/discount的公式,所以可以说二者相等。


  第二点,我们先讲一下roll yield ,roll yield可以理解为我们在不断进行hedge时,每签一份forward合约可以给我们带来的好处,所以roll yield>0.的时候,就表示签这个forward对我们有利,所以我们就倾向于做hedge,反之,如果roll yield<0,说明对我们产生了成本,是不利的,就倾向于不做hedge。所以在做题或者理解其他知识点的时候,不必把roll yield和forward premium联系在一起哈。


2、carry trade:


B选项中的Larger forward premium 或者表述为Higher forward premium,都是两国的利差变得更大的意思,这个表述我们要熟悉一下的哈~


Sophia先从利率低的国家(UK)借钱,再把这些借来的前投资到利率高的国家(China),从而赚取利息差,这描述的是carry trade的投资策略。利差越大,汇率波动越小,carry trade的收益越高,A和C都可以排除。


B选项,Sophia作为英国分析师,低利率货币GBP,本身trade at forward premium ,因此CNY/GBP也是trade at forward premium;而更大的forward premium,即意味着两国利差会更大。所以B正确。


为何低利率货币会trade at forward premium,因为目前利率低,钱会大量涌入利率高的国家,但是将来钱从高利率国家撤走时会抛售该国家货币,抛售导致高利率国家货币贬值,那么相对的低利率国家货币升值,所以trade at premium

(加粗字体解释了为什么会有这种表述,理解即可,注意Higher forward premium或者表述为larger forward premium意思是两国利差变大的意思掌握即可。)

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