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杨KitKit · 2020年03月01日

问一道题:NO.PZ201512181000007101

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问题如下:

Based on Exhibit 1, Flusk’s portfolio is expected to experience:

选项:

A.

a minimum daily loss of $1.10 million over the next year.

B.

a loss over one month equal to or exceeding $5.37 million 5% of the time.

C.

an average daily loss of $1.10 million 5% of the time during the next 250 trading days.

解释:

B is correct. VaR is the minimum loss that would be expected a certain percentage of the time over a specified period of time given the assumed market conditions. A 5% VaR is often expressed as its complement—a 95% level of confidence. Therefore, the monthly VaR in Exhibit 1 indicates that $5.37 million is the minimum loss that would be expected to occur over one month 5% of the time. Alternatively, 95% of the time, a loss of more than $5.37 million would not be expected

月考上做错了这道题。

A选项不正确,是因为这个选项没有指出VAR的概率吗?

谢谢老师。

1 个答案
已采纳答案

丹丹_品职答疑助手 · 2020年03月02日

同学你好,本题考查VaR的理解,VaR:is the minimum loss in either current units or as percentage of portfolio value that would be expected to be incurred  a certain percentage of the time over a certain period of time give assumption.

不同的置信区间、不同的时间间隔都会造成VaR的不同,所以A选项缺少了在5%的概率下这个条件。