You own shares of a company that are currently trading at $30 a share. Your technical analysis of the shares indicates a support level of $27.50. That is, if the price of the shares is going down, it is more likely to stay above this level rather than fall below it. If the price does fall below this level, however, you believe that the price may continue to decline. You have no immediate intent to sell the shares but are concerned about the possibility of a huge loss if the share price declines below the support level. Which of the following types of orders could you place to most appropriately address your concern? Short sell order. Good-till-cancelled stop sell order. Good-till-cancelled stop buy order. 原版书后题选B，为什么要加一个定语GOOD TILL CANCELLED 而不是简单的 stop sell？

老师你好，请问47题为什么C不对？ol的ni是先低后高对吗？

第18题怎么解

请问老师可转债套利能再讲一下吗?

老师，百题这个题目是考的哪个知识点？

A wider confidence interval 是指置信区间变大？比如95%上升到99%.

长期资产的减值和减值回转，与第二张图片的valuation model什么关系啊？我有点混乱了，请老师解释一下。

你好，百题第153，本题对美式期权不理解，题目这个BOUND是什么意思，题目问得是期权费吗，欧式而理解了，是因为欧式不能时时刻刻行权，就要算一个折现，但是美式还不明白。

99题，如果先做了A后还做B，那这个人有什么违规吗，

老师，可以帮忙把23题的金融计算器列写方法写一下吗？这道题不太会做。谢谢老师