此法適合在下午到收盤后之間選股，最好在尾盤30分選股，去除了20天內(nèi)換手大于16%以上個股，當(dāng)天換手在2%到6%之間股性活躍一些.

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;