✔ 最佳答案
HSBC(005)我85.05買入
買入要付 brokerage and stamp duty so the cost include the brokerage fee and stamp duty
[$87x400x(1+0.25% + 1%)]
如賣出
要付 brokerage and stamp duty so the receipt will deduct the brokerage fee and stamp duty
[$87x400x(1 - 0.25% - 1%)]