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HG · 2020年09月12日

问一道题:NO.PZ201702190100000205

* 问题详情,请 查看题干

问题如下:

5.Using the data in Exhibit 2, the portfolio's annual 1% parametric VaR is closest to:

选项:

A.

CAD 17 million.

B.

CAD 31 million.

C.

CAD 48 million.

解释:

B is correct.

The VaR is derived as follows:

VaR = [(E(Rp) - 2.33ap)(-1)](Portfolio value)

where

E(Rp) = Annualized daily return = (0.00026 x 250) = 0.065

250 = Number of trading days annually

2.33 = Number of standard deviations to attain 1% VaR

σp = Annualized standard deviation =(0.00501250)=0.079215(0.00501\ast\sqrt{250})=0.079215

Portfolio value = CAD 260,000,000

VaR = -(0.065 - 0.184571) x CAD 260,000,000 =CAD31,088,460

考点:VaR的计算

解析:注意正文表格中给的数据的时间单位是daily,而题干求的时间单位是annual,所以首先要对数据进行年化。默认一年有250个交易日。

然后年化后的数据代入(Zσ-u)*portfolio value。

怎么看出来是daily的?题中也没说是要求anual啊

1 个答案

星星_品职助教 · 2020年09月13日

同学你好,

case中的表格是有延续性的,给的都是daily的概念。此外通过两张表格中数据大小比较可知,0.026%也应该是daily的概念。

题干中标明“the portfolio's annual 1% parametric VaR”

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NO.PZ201702190100000205问题如下 Using the ta in Exhibit 2, the portfolio's annu1% parametric Vis closest to: A.C17 million.B.C31 million.C.C48 million.B is correct.The Vis rivefollows:V= [(E(Rp) - 2.33ap)(-1)](Portfolio value)whereE(Rp) = Annualizeily return = (0.00026 x 250) = 0.065250 = Number of trang ys annually2.33 = Number of stanrviations to attain 1% VaRσp = Annualizestanrviation =(0.00501∗250)=0.079215(0.00501\ast\sqrt{250})=0.079215(0.00501∗250​)=0.079215Portfolio value = C260,000,000V= -(0.065 - 0.184571) x C260,000,000 =CA1,088,460考点VaR的计算解析注意正文表格中给的数据的时间单位是ily,而题干求的时间单位是annual,所以首先要对数据进行年化。默认一年有250个交易日。然后年化后的数据代入(Zσ-u)*portfolio value。如题,提干并没有说1%是单尾

2024-08-09 08:12 1 · 回答

NO.PZ201702190100000205 这题是不是有毛病啊 我不明白为啥ily? ily怎么看出来的?不是没说ily就按照annual? 就算推断出来这话很牵强吧,万一表格就是按年化

2022-01-01 14:31 1 · 回答

C31 million. C48 million. B is correct. The Vis rivefollows: V= [(E(Rp) - 2.33ap)(-1)](Portfolio value) where E(Rp) = Annualizeily return = (0.00026 x 250) = 0.065 250 = Number of trang ys annually 2.33 = Number of stanrviations to attain 1% Vσp = Annualizestanrviation = (0.00501∗250)=0.079215(0.00501\ast\sqrt{250})=0.079215(0.00501∗250 ​)=0.079215 Portfolio value = C260,000,000 V= -(0.065 - 0.184571) x C260,000,000 =CA1,088,460 考点VaR的计算 解析注意正文表格中给的数据的时间单位是ily,而题干求的时间单位是annual,所以首先要对数据进行年化。默认一年有250个交易日。 然后年化后的数据代入(Zσ-u)*portfolio value。请问2.33是查表得出的吗?

2020-12-03 15:45 2 · 回答

解答里面有一张图显示不出来

2019-12-25 11:37 1 · 回答