引用:
原帖由 fatpat 於 2013-1-23 10:50 發表
i.e if think chance for up/flat greater than down, but might retreat to 232, then (using this morning data)
LP234 X 1 @63
SP232 x 2 @35
P.S. need more margin
For margin estimation
Long Future + SC ~ 1 short future
LP + SP x 2 ~ 1 short future
so might SC x 2 the second last days to boost profit