此法适合在下午到收盘后之间选股，最好在尾盘30分选股，去除了20天内换手大于16%以上个股，当天换手在2%到6%之间股性活跃一些.
vol>ref(VOL,1)and ref(vol,3)>ref(vol,2)and ref(vol,2)>ref(vol,1)and
close>ref(close,1)and ref(close,3)>ref(close,2)and ref(close,2)>ref(close,1)
and close>open and ref(vol,1)/capital>0.011 and vol/capital<0.1 and
count(ref(vol,1)/capital<0.16,20)=20;
