NO.PZ201601050100000101
问题如下:
1. Analyze the movement of the USD against the foreign currency for Portfolio A. Justify your choice.
选项: 解释:
Justification
The 19.5% domestic-currency return for Portfolio A is higher than the 15% foreign-currency portfolio return in GBP; therefore, the USD necessarily depreciated relative to the GBP.
The domestic-currency return on a foreign portfolio will reflect both the foreign-currency return on the portfolio and the percentage movements in the spot exchange rate between the domestic and foreign currency. The domestic-currency return is multiplicative with respect to these two factors:
RDC = (1 + RFC)(1 + RFX) – 1
where RDC is the domestic-currency return (in percent), RFC is the foreign-currency return of the asset (portfolio), and RFX is the percentage change of the foreign currency against the domestic currency. (Note that in the RFX expression the domestic currencythe USD in this caseis the price currency.)
Solving for RFX: (1 + 15%)(1 + RFX) – 1 = 19.50%; RFX = 3.91%
Thus, the USD depreciated relative to the GBP. That is, the GBP appreciated against the USD because RFX is quoted in terms of USD/GBP, with the USD as the price currency and GBP as the base currency, and in this example RFX is a positive number (3.91%).
题目中不是已知Portfolio A的回报率是19.5% (是以GBP计价), Portfolio B是0 (以美元计价)。这种情况下,问题中又提了Portfolio A的回报率是15%是什么意思?
另外,通过题干不是就能解决问题了吗?GBP的 return高,钱会涌入GBP, 导致GBP升值,USD贬值吗?
答案的解题逻辑是什么?
谢谢