引用:
原帖由 goldwater 於 2012-7-24 09:00 發表
我成日誤會咗long 輸有限,贏無限,即用100點賺10=10%
D專家又話short賺有限,輸可以無限,即用7萬蚊做按金一張,贏100點=$5000,=0.714%
一直以來都誤會左,好在有Ching 解說;
如果期權金向垂直收縮的情况下,係咪short兩邊仲着數?淨 ...
If SC192/SP192 in Friday, the set cost around 600pts.
After big drop on Monday, the set cost around 400pts.
short兩邊 is not bad an idea, except for big gap against the strike price.