NO.PZ2020011303000053
问题如下:
A one-year project has a 3% chance of losing USD 10million, a 7% chance of losing USD 3 million, and a 90% chance of gaining USD 1 million. What are (a) the VaR and (b) the expected shortfall when the confidence level is 95% and the time horizon is one year?
选项:
解释:
VaR is USD 3 million. Expected shortfall (USD) is 10 × 0.6 + 3 × 0.4 = 7.2.
有一个项目,3%的概率会损失10m,7%损失3m,90%概率会获得1m,求95%置信区间下的VaR与ES?
VaR=3m
ES=10 × 0.6 + 3 × 0.4 = 7.2m
离散型的尾部ES都不能用算数平均,要用这种按比例的算法吗?讲义上有提到吗?