单因素模型里有考虑非系统性风险啊，e就是非系统性风险的收益回报啊，公式里就这么体现的呀，而且老师讲课也说给e这个残差赋予的非系统风险收益的surprise

老师您好，这道题中，感觉B和C都说的不是太对。虽然这题答案是选了C。这题是不是有点小问题？题目解析中提到的是：The margin adjustments are made based on the settlement price, which is calculated as the average trade price over a specific closing period at the end of the trading day. The length of the closing period is set by the exchange。谢谢。

如何转换得出95%？

quoted price 不是104.75 吗？为什么后面还要除100*面值

Consider a 7% semiannual coupon bond with a par value of $100 and four remaining coupons, which is trading at a yield of 8%. There are 90 days remaining in the current period that has a total of 180 days. The accrued coupon of this bond is closest to: A 1.59 B 1.88 C 2.18 D 2.57 怎么算出答案B的，不是1.75吗？ 谢谢

这题的计算是不是错了啊 计算出来应该是1.75，到底是哪里错了呢

老师，请问这句“increase in the risk-free rate will cause the price of an American call to increase ”该怎么理解

6.75%*7-5.87%*6 这个我用计算器为什么算不出正确答案呢？可以麻烦写一下按计算器的过程吗？（我可能在5.87的%上出了问题，但不知如何改）谢谢！

为什么要除以35呀？

题目不是两家公司吗？！