{9: 25 -9: 29 Stock selection A1:= dynainfo (4)/dynainfo (3) > =1.02; A2:=DYNAINFO( 17)>=5; a3:= dyna info(37)* 100 & gt； =0.5; A4:= capital/1000000 = 3000; ; JH:a 1 anda 2 anda 3 anda 4 and 5； ; A 1 assignment: opening price/previous closing price > =1.02; A2 assignment: ratio > = 5; A3 allocation: turnover rate *100 > =0.5; A4 Assignment: Current circulating share capital (hand)/1000000=3000.

In actual combat, call auction plays an important qualitative role, which generally reflects the tendency of both long and short sides to go long or short, from which we can understand the basic will of long and short. In the specific operation, we mainly compare yesterday's call auction and the closing price, and we can see the changes in the opening level and trading volume.