✔ 最佳答案
1. 係, 你說得對, 是base on options 計算的.
是 Put Option.
Banker: Buy Put
Customer: Sell Put
個俾出的利息其實就是Cost of Option.
2. In the view of Bank, he has done all the hedging to prevent loss. He only gain the charges. Therefore, Bank don't care the market is bull or bear. He only count on the demands.
In the view of Customer, they buy ELI usually because of the attractive of "interest rate". They won't concentrate on the volatation of the market. In bull market, the chance to exercise the option is less. Customer would be more attracted by the "interest". In bear market, the chance to exercise the option is high. Therefore, the demand of ELI in bull market would be larger and push banker to issue it.