或者資本自由流通會受限製?
假如 USD-HKD ped to 7.8, 而且資本可以自由流通,兩邊的利率應該基本一樣。現在是HKD 利率遠低於 USD 利率。
Arbitrage的路數就是:borrow HKD, exchange to USD. You pay HDK interest and earn USD interes. If USD-HKD ped to around 7.8, the interest differential is then free lunch.
有點亂啊