the higher percentage of retail trades leads to lower future ret

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that the higher percentage of retail trades leads to lower future returns. However, the coefficients for the min and max variables remain significant. ...
www.ccfr.org.cn/cicf2009/download.php?paper=20081208235350... - Similar

下行时没有交易的缺口,主要是量的缺口,空方再卖很可能是超低卖空了,多方一但反扑,空方马上亏损,类似入无人之境,很可能是被包围;
上行时正好相反,空方让过多方先头部队,在次高点开始卖空,多方一下就开始亏损了

卖空主要市场或生意都是散户,间断就是散户没有了,缺口也是散户的缺口,卖空之后,没有散户在更低价位卖了,MM cover 不了了,于是开始作多,换方向,希望散户生意回头,交易量缺口往往是 MM's turning points

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