If i turn the in the money option to at the money option in order receive less cash, which means I will suffer a loss? Why would I consider to do that?

If Bank ask Fed fund borrower money, is it cheaper than borrow from normal bank? And is it cheaper to borrower from central bank? Is fed fund = central bank?

Structured notes / securitized asset , pass through securities , CMO, REMICS, MVBs, stripper securities 全是表外嗎？out of balance sheet

这里0.35除以50怎么理解

Sc rate should be smaller than GC rate as it is safer?

Dealer bank is repo transaction borrower or lender?

原始equity是80，其中50 拿来做保证金 此时总资产不变，但是还借了50买equity 此时负债加50，这50用来买equity 此时的equity 不用加50吗？

为什么相关性上升，equty价值会上升呢，而相关性下降为啥equity会损失呢

PSA是不是这样理解，第一个月提前偿付率0.2%,第二个月0.4%,一直上涨，直到30个月后维持6%不变

这个题第二种方式将原债券均分之后，不还是一种债券吗，我认为相关系数为1 呀，损失全都损失，感觉起不到分散风险的作用