开发者:上海品职教育科技有限公司 隐私政策详情

应用版本:4.2.11(IOS)|3.2.5(安卓)APP下载

金融民工阿聪 · 2021年01月31日

为什么不能这样去算P的10-day-VAR呢

NO.PZ2020033001000032

问题如下:

Suppose an investment manager manages an investment portfolio with two assets, of which asset A is $ 2 million and asset B is $ 3 million. The correlation between the two assets is 0.2, and the standard deviations of the daily returns of assets A and B are 2% and 1%, respectively. Assuming that the expected daily return is 0, at a 95% confidence level (α = 1.645), what is the 10-day risk value (VaR) of the portfolio?

选项:

A.

$65800

B.

$49350

C.

$89800

D.

$283972

解释:

D is correct.

考点:组合VaR的计算

解析:首先资产A和B的daily VaR分别是:

A:2million*2%*1.645=65800

B:3million*1%*1.645=49350

他们两个组合的daily var就等于(65800^2+49350^2+2*0.2*65800*49350)^0.5=89800

那么10天的var就等于89800*SQRT(10) 得到283972

2 个答案
已采纳答案

小刘_品职助教 · 2021年02月01日

同学你好,

你可能是按计算器按错了,

 sigma p 应该是 0.0109,具体可以看一下下图

 

 

小刘_品职助教 · 2021年02月01日

  • 2

    回答
  • 0

    关注
  • 426

    浏览
相关问题

NO.PZ2020033001000032问题如下 Suppose investment manager manages investment portfolio with two assets, of whiasset A is $ 2 million anasset B is $ 3 million. The correlation between the two assets is 0.2, anthe stanrviations of the ily returns of assets A anB are 2% an1%, respectively. Assuming ththe expecteily return is 0, a 95% confinlevel (α = 1.645), whis the 10-y risk value (VaR) of the portfolio? A.$65800B.$49350C.$89800$283972 is correct.考点组合VaR的计算解析首先资产A和B的ily VaR分别是A2million*2%*1.645=65800B3million*1%*1.645=49350他们两个组合的ily var就等于(65800^2+49350^2+2*0.2*65800*49350)^0.5=89800那么10天的var就等于89800*SQRT(10) 得到283972 请问先求组合的波动率再计算VaR为什么与分别求VaR完全不同?为何不能用组合的方法?谢谢

2023-08-02 18:38 1 · 回答

NO.PZ2020033001000032问题如下 Suppose investment manager manages investment portfolio with two assets, of whiasset A is $ 2 million anasset B is $ 3 million. The correlation between the two assets is 0.2, anthe stanrviations of the ily returns of assets A anB are 2% an1%, respectively. Assuming ththe expecteily return is 0, a 95% confinlevel (α = 1.645), whis the 10-y risk value (VaR) of the portfolio? A.$65800B.$49350C.$89800$283972 is correct.考点组合VaR的计算解析首先资产A和B的ily VaR分别是A2million*2%*1.645=65800B3million*1%*1.645=49350他们两个组合的ily var就等于(65800^2+49350^2+2*0.2*65800*49350)^0.5=89800那么10天的var就等于89800*SQRT(10) 得到283972 能不能算A和B的十天的volatility,算出组合的volatility,再乘1.645乘5million

2023-07-22 18:52 1 · 回答

$49350 $89800 $283972 is correct. 考点组合VaR的计算 解析首先资产A和B的ily VaR分别是 A2million*2%*1.645=65800 B3million*1%*1.645=49350 他们两个组合的ily var就等于(65800^2+49350^2+2*0.2*65800*49350)^0.5=89800 那么10天的var就等于89800*SQRT(10) 得到283972 想问下这部分的计算公式是对应讲义第几页?

2021-11-12 02:13 1 · 回答

NO.PZ2020033001000032 想问一下这个题目里面的Assuming ththe expecteily return is 0 这句话有起到什么作用吗?如果不是0还能这么做吗?

2021-10-03 02:58 1 · 回答

$49350 $89800 $283972 is correct. 考点组合VaR的计算 解析首先资产A和B的ily VaR分别是 A2million*2%*1.645=65800 B3million*1%*1.645=49350 他们两个组合的ily var就等于(65800^2+49350^2+2*0.2*65800*49350)^0.5=89800 那么10天的var就等于89800*SQRT(10) 得到283972 想问下本题用到的公式 是对应哪一页的讲义?

2021-07-22 13:38 2 · 回答