利率低,做空风险也降低 dvork 发表于 2011-6-30 13:00
为什么? 为什么啊 not4weak 发表于 2011-6-30 13:07
I know but p/c ratio 0.9 aimei 发表于 2011-6-30 15:50
10% buffer dvork 发表于 2011-6-30 15:55
sis, what is it? thanks aimei 发表于 2011-6-30 16:31
10% buffer for bearish. dvork 发表于 2011-6-30 17:10