gangdu1997 当前离线
CFA New Member
对,这个肯定是bounded below by zero,书上就是这么说的,意思理解也是这个意思,下限是零~
positive skewness,bounded below by zero,suit for asset price,not for return of asset on account of negative return。
TOP
bounde above by zero?
the max is zero,哈哈
下午Quantitive
有一道题,问得是 Safty first,选哪个investment,然后给了一个RFR2%, Threshold应该是1.25%,
如果用1.25%来算的话应该选3,但是我觉得给出RFR的话应该有些tricky,所以用了2%来算,后来改成2了.
采用RFR算出来的是Sharpe ratio。
应该用1.25%