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hillock1122 · 2021年02月28日

怎么用年度违约概率求出月度的违约概率?

NO.PZ2016082406000084

问题如下:

A risk analyst is trying to estimate the credit VAR for a portfolio of two risky bonds. The credit VAR is defined as the maximum unexpected loss at a confidence level of 99.9% over a one-month horizon. Assume that each bond is valued at $500,000 one month forward, and the one-year cumulative default probability is 2% for each of these bonds. What is the best estimate of the credit VAR for this portfolio, assuming no default correlation and no recovery?

选项:

A.

$841

B.

$1,682

C.

$998,318

D.

$498,318

解释:

ANSWER: D

As in the previous question, the monthly default probability is 0.00168. The following table shows the distribution of credit losses.

This gives an expected loss of $1,682, the same as before. Next, $500,000 is the WCL at a minimum 99.9% confidence level because the total probability of observing a number equal to or lower than this is greater than 99.9%. The credit VAR is then $500,000 - $1,682 = $498,318.

​怎么用年度违约概率求出月度的违约概率?

1 个答案

品职答疑小助手雍 · 2021年03月01日

嗨,努力学习的PZer你好:


年度PD和月度PD转换时是用公式(1-年度PD)=(1-月度PD)^12

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

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