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我们 · 2020年04月28日

问一道题:NO.PZ2016082405000105

问题如下:

Suppose a portfolio has a value of $1,000,000 with 50 independent credit positions. Each position has the same amount of $20,000. Each of the credits has a default probability of 2% and a recovery rate of 0%. The credit portfolio has a default correlation equal to 0. The number of defaults is binomially distributed and the 95th percentile of the number of defaults is 3. What is the credit value at risk at the 95% confidence level for this credit portfolio?

选项:

A.

$20,000.

B.

$40,000.

C.

$60,000.

D.

$980,000.

解释:

B The loss given default is $60,000 [3 x ($1,000,000 I 50)]. The expected loss is equal to the portfolio value times and is $20,000 (0.02 x $1,000,000). The credit VaR is defined as the quantile of the credit loss less the expected loss of the portfolio. At the 95% confidence level, the credit VaR is equal to $40,000 ($60,000 minus the expected loss of $20,000).

请问这个题为什么要用LGD-EL?这是什么公式呢?

1 个答案

小刘_品职助教 · 2020年04月28日

同学你好,

这道题其实应该是WCL-EL,这个loss given default跟我们平常理解的那个LGD不是一个概念。