问题如下:
Annabelle opened a margin account to buy 450 shares of a public common stock for $31,500, but she didn't have enough money. So she posted initial margin of 30%. The maintenance margin requires 25%. When would Annabelle get a margin call if the stock declined steadily?
选项:
A.$58.00.
B.$65.00.
C.$72.50.
解释:
B is correct.
(1-0.3)/ (1-0.25) *(31500/450)= $65.33
为什么这道题用P0*IM+(PL-P0)的和除以P0算出来是 68 不是65.33 和书上公式算出来不一样 可是明明前面那个公式可以推导到后面的公式