老师，dispersion那里是鼓励调仓还是不鼓励呢？

bank 's loan为什么是RR的意思？

50000000x 40000000y=10000000 x y=1 解方程得两者的权重应该是-3和4才对啊

老师好，能具体解释一下WCL的计算逻辑吗？ Consider a portfolio with a notional value of $5,000,000 containing 50 credits. Each one has a same PD of 2% and LGD of 1. Each one is an obligation from the same obligor so that the default correlation is 1. What is the Credit VaR at the 99% confidence level?

老师好，请问计算收益率的VaR为什么是-2%？

老师好。 这道题的答案是用连续复利计算的。请问何时用连续复利，何时可以用（1 年收益率）的n 次方计算呢？ A bond with a face value of 350 matures in 10 years and is calculated to be worth 180 using the Merton model. The risk-free rate is 5.5%. What is the bond’s spread? A 1.15%. B 1.75%. C 3.55%. D 6.65%.

老师好，请问这道题，违约相关系数是0和是1，计算上有什么区别？ Suppose there is a $1,000,000 portfolio with n credits that each have a default probability, π = 2% and a zero recovery rate. The default correlation is 0 and n = 1,000. There is a probability of 28 defaults at the 95th percentile based on the binomial distribution with the parameters of n = 1,000 and π = 0.02. What is the credit VaR at the 95% confidence level based on these parameters?

这里为什么不能用 DD=(V-K)/ σv 方法计算呢？

老师，这里的buyer指的是trust 吗？

老师323题怎么做？为什么选D？B哪里错了