always remember "cap" = buy a put+ sell a call,
value of option is not dependent on interest rate level, but interest rate volatility, according to Black model....
payout of a call at expire date equalss to the difference of strike price and the expire day price.
holder of a call option receive payout when interest rate is higher than strik because the holder is hedging against higher interest rate.
[此贴子已经被作者于2010-5-31 16:33:16编辑过] |