本帖最后由 328 于 2010-9-29 15:49 编辑
Stocklover,
other days, we were discussing to use SH for short positions. Actually, by percentage it's almost equal by shorting SPY or longing SH. But, just same as dealing with 2x, 3x ETF, don't hold it for a long period of time. Only for 一个波段, not for many 波段.
for example, SH last time from 54 to 48.5 --> around 10% loss while SPY from 104 to 115 --> also around 10% gain |