投資分享及大市趨勢, 以Bible作為後盾 and 4 basic stock option strategies (賣出認估/買入認購或賣出認購/買入認估期權四招):
Short put/Long call V.S. Short Call/Long put
2011年5月27日星期五
short call margin
oh if the margin is locked, there is some reason about the direction problems (your guess may be wrong), however, if you are quite right, margin release and you can buy some stuff.
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