老师好，关于牛市价差策略本身就是预测股票上涨的，用两个put来构造我不是很理解，put不是看跌吗？相同的熊市价差策略的用两个call来构造我也有疑惑

1.645对应的概率5%和2.33对应的概率1%怎么查的？麻烦再讲解细一点

怎样理解 hedging to decrease the variablilty of the firm's value may end up increasing the variablilty of the firm's earning due to the difference between accouting earnings and cash flows

怎么理解

怎样理解这句话？

老师，是C-suite不是C-suit，而且跟他们穿西装也没关系

求解汉语解析：An investor sold a stock short and is worried about rising prices. To protect himself from rising prices he would place A.stop order to sell. B. stop order to buy. C. limit order to sell. D. limit order to buy.

这题麻烦老师解释一下吗？看不太明白解析

这里面的naked option是什么意思？

这里如何提现了basis risk 的叠加，这里的basis risk是多少