然而，本文进一步发现在熊市时卖方驱动大额交易的持续性价格效果较买方驱动大额交易的持续性价格效果为大，牛市时则呈现反转的型态。
However , we find that the permanent price effects of large sells are larger than the effects of large purchases in bearish markets , and the reverse pattern is found for bullish markets .
反转型态