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sunnytracecfa · 2023年11月10日

这个答案的公式怎么看不懂,和课件的不一样啊,下图左边是课件,右边是答案。按照课件算出来的结果和答案算出来的不一样

* 问题详情,请 查看题干

NO.PZ201512020800000101

问题如下:

1. Based upon Exhibit 1, the forward premium (discount) for a 360-day INR/GBP forward contract is closest to:

选项:

A.

–1.546.

B.

1.546

C.

1.576

解释:

C is correct.

The equation to calculate the forward premium (discount) is:

Ff/dSfld=Sf/d([Actual360]1+id[Actual360])(ifid)F_{f/d}-S_{fld}=S_{f/d}(\frac{\lbrack{\displaystyle\frac{Actual}{360}}\rbrack}{1+i_d\lbrack{\displaystyle\frac{Actual}{360}}\rbrack})(i_f-i_d)

Sf/dS_{f/d} is the spot rate with GBP the base currency or d, and INR the foreign currency or <em>f</em>.Sf/df.S_{f/d} per Exhibit 1 is 79.5093, i f is equal to 7.52% and i d is equal to 5.43%.

With GBP as the base currency (i.e. the “domestic” currency) in the INR/GBP quote, substituting in the relevant base currency values from Exhibit 1 yields the following:

Ff/dSf/d=79.5093([360360]1+0.0543[360360])(0.07520.0543)F_{f/d}-S_{f/d}=79.5093(\frac{\lbrack{\displaystyle\frac{360}{360}}\rbrack}{1+0.0543\lbrack{\displaystyle\frac{360}{360}}\rbrack})(0.0752-0.0543)

Ff/dSf/d=79.5093(11.0543)(0.07520.0543)F_{f/d}-S_{f/d}=79.5093(\frac1{1.0543})(0.0752-0.0543)

Ff/dSf/d=1.576F_{f/d}-S_{f/d}=1.576

考点 : 利率平价公式的计算.

解析 : Covered IRP:

Ff/dSfld=Sf/d([Actual360]1+id[Actual360])(ifid)F_{f/d}-S_{fld}=S_{f/d}(\frac{\lbrack{\displaystyle\frac{Actual}{360}}\rbrack}{1+i_d\lbrack{\displaystyle\frac{Actual}{360}}\rbrack})(i_f-i_d)

其中,GBP代表的是本币,而INR代表的是外币,于是直接代入数字到上述公式中可得:

Ff/dSf/d=79.5093([360360]1+0.0543[360360])(0.07520.0543)F_{f/d}-S_{f/d}=79.5093(\frac{\lbrack{\displaystyle\frac{360}{360}}\rbrack}{1+0.0543\lbrack{\displaystyle\frac{360}{360}}\rbrack})(0.0752-0.0543)

Ff/dSf/d=79.5093(11.0543)(0.07520.0543)F_{f/d}-S_{f/d}=79.5093(\frac1{1.0543})(0.0752-0.0543)

Ff/dSf/d=1.576F_{f/d}-S_{f/d}=1.576


这个答案的公式怎么看不懂,和课件的不一样啊,下图左边是课件,右边是答案。按照课件算出来的结果和答案算出来的不一样



1 个答案

笛子_品职助教 · 2023年11月10日

嗨,爱思考的PZer你好:


Hello,亲爱的同学~


这两个公式,是不一样的哦。

就是有计算差异的。

一个是精确公式,一个是近似公式。


近似公式很方便理解:F 和S的升贴水,等于利差。

也就是说,在利差上赚的钱,要在升贴水中亏出去,最终不赚不亏,这才是均衡。


我们考试的时候,是选择题,这两个公式都可以用,选一个最接近的答案就可以。

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努力的时光都是限量版,加油!

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NO.PZ201512020800000101问题如下1. Baseupon Exhibit 1, the forwarpremium (scount) for a 360-y INR/Gforwarcontrais closest to:A.–1.546.B.1.546C.1.576C is correct.The equation to calculate the forwarpremium (scount) is:Ff/SflSf/[Actual360]1+iActual360])(if−iF_{f/-S_{fl=S_{f/(\frac{\lbrack{\splaystyle\frac{Actual}{360}}\rbrack}{1+i_lbrack{\splaystyle\frac{Actual}{360}}\rbrack})(i_f-i_Ff/−Sfl=Sf/(1+i[360Actual​][360Actual​]​)(if​−i)Sf/_{f/Sf/ is the spot rate with Gthe base currenor anINR the foreign currenor em f /em .Sf/em f /em .S_{f/ em f /em .Sf/ per Exhibit 1 is 79.5093, i f is equto 7.52% ani is equto 5.43%.With Gthe base curren(i.e. the “mesticurrency) in the INR/Gquote, substituting in the relevant base currenvalues from Exhibit 1 yiel the following:Ff/Sf/79.5093([360360]1+0.0543[360360])(0.0752−0.0543)F_{f/-S_{f/=79.5093(\frac{\lbrack{\splaystyle\frac{360}{360}}\rbrack}{1+0.0543\lbrack{\splaystyle\frac{360}{360}}\rbrack})(0.0752-0.0543)Ff/−Sf/=79.5093(1+0.0543[360360​][360360​]​)(0.0752−0.0543)Ff/Sf/79.5093(11.0543)(0.0752−0.0543)F_{f/-S_{f/=79.5093(\frac1{1.0543})(0.0752-0.0543)Ff/−Sf/=79.5093(1.05431​)(0.0752−0.0543)Ff/Sf/1.576F_{f/-S_{f/=1.576Ff/−Sf/=1.576考点 利率平价公式的计算.解析 CovereIRP:Ff/SflSf/[Actual360]1+iActual360])(if−iF_{f/-S_{fl=S_{f/(\frac{\lbrack{\splaystyle\frac{Actual}{360}}\rbrack}{1+i_lbrack{\splaystyle\frac{Actual}{360}}\rbrack})(i_f-i_Ff/−Sfl=Sf/(1+i[360Actual​][360Actual​]​)(if​−i)其中,GBP代表的是本币,而INR代表的是外币,于是直接代入数字到上述公式中可得Ff/Sf/79.5093([360360]1+0.0543[360360])(0.0752−0.0543)F_{f/-S_{f/=79.5093(\frac{\lbrack{\splaystyle\frac{360}{360}}\rbrack}{1+0.0543\lbrack{\splaystyle\frac{360}{360}}\rbrack})(0.0752-0.0543)Ff/−Sf/=79.5093(1+0.0543[360360​][360360​]​)(0.0752−0.0543)Ff/Sf/79.5093(11.0543)(0.0752−0.0543)F_{f/-S_{f/=79.5093(\frac1{1.0543})(0.0752-0.0543)Ff/−Sf/=79.5093(1.05431​)(0.0752−0.0543)Ff/Sf/1.576F_{f/-S_{f/=1.576Ff/−Sf/=1.576答案写的得很乱,建议用常规公式直接算

2022-06-06 09:49 1 · 回答

NO.PZ201512020800000101 具体原理是什么

2021-12-14 13:56 1 · 回答

NO.PZ201512020800000101 this is a test. pls ignore.

2021-11-01 10:49 2 · 回答

NO.PZ201512020800000101 我算出来时1.5839,都不对啊。F/S = (1+Rinr)/(1+Rgbp),算出来F等于81.0932,F-S就等于1.5839啊。 麻烦老师解答一下,谢谢

2021-09-04 21:29 1 · 回答