买入并持有策略

另外本文还采用了买入并持有策略对市场上存在的所有特别处理类股票进行投资，比较了该类股票的投资绩效与市场组合投资绩效的差异，进而考量退市机制有效性。

In addition , the article also adopted a buy-and-hold investment strategy on all the special treatment stocks market , compare the differences between the investment performance of the special treatment stocks and the investment performance of the market portfolio , and then consider the effectiveness of the delisting mechanism .

在股票涨停当日买入并短期持有的投资策略是可以获利的，其收益性随着持有时间的延长而逐渐减弱，持有时间越短的策略收益率越大。

Buy in stock before its limit and perform a short-term holdings can be profitable ; the profitability gradually weakened with the extension of the holding time , the shorter the holding time the greater the profitability .