在这一天，印花税上调政策的出台。
印花税上调两倍，达到3%这使得监管者的立场十分明确。
The tripling of the stamp tax, to0.3%, makes the position of regulators abundantly clear.
印花税上调后，投资者持有股票的平均期限延长了50天左右。
The holding period was increased by 50 days after stamp duty increasing.
本文发现印花税上调后，无论是在短窗口内还是长窗口内，交易量都显著下降。
In this paper, we find that after stamp duty was increased, the shares turnover significantly decreased both in short and long Windows.
去年5月印花税的上调是为了缓和股民过于狂热的劲头，这种劲头让申银万国那样的证券公司变成投机倒把活动迅速膨胀的赌场。
A rise in the tax last May was intended to temper the animal spirits that were turning brokers like Shenyin & Wanguo into heaving gambling dens.
去年5月印花税的上调是为了缓和股民过于狂热的劲头，这种劲头让申银万国那样的证券公司变成投机倒把活动迅速膨胀的赌场。
A rise in the tax last May was intended to temper the animal spirits that were turning brokers like Shenyin & Wanguo into heaving gambling dens.
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