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TZXคิดถึง · 2023年05月02日

请解释一下这道题。

NO.PZ2023040601000023

问题如下:

The Index Plus Fund has a one-day 95% value at risk (VaR) of $6.5 million. Which of the following statements regarding the VaR of the Index Plus Fund is correct?

选项:

A.

The expected maximum loss for the portfolio is $6.5 million.

B.

Five percent of the time, the portfolio can be expected to experience a loss of at least $6.5 million.

C.

Ninety-five percent of the time, the portfolio can be expected to experience a one-day loss of no more than $6.5 million.

解释:

VaR measures the frequency of losses of a given minimum magnitude. Here the VaR indicates that on 5% of trading days, the portfolio will experience a loss of at least $6.5 million. (Although C may appear to say the same thing as B, it actually implies that the portfolio will experience a loss on 95% of trading days.) The correct interpretation is that returns will be equal to or greater than -$6.5 million on 95% of trading days; those returns include gains as well as losses.

我理解B和C的区别就是那个one-day loss

题干写了one day 95% value at risk (VaR) ,那不就意味着这个是one day loss吗?

2 个答案
已采纳答案

星星_品职助教 · 2023年05月11日

B选项不需要提到gain,5%的左尾就是全部都是loss。

只有95%的描述才是既有gain也有loss。

星星_品职助教 · 2023年05月03日

同学你好,

95%的情况除了loss以外,还有gain的情况。即分布从0开始右侧的所有部分都已经是gain了,这部分并没有“experience loss”。

C选项就错在说95%的情况下全是亏损。