这个是个人的选股公式，用于操作强势股，主要思想是强势股回调时买入，避免最高被套。

{第一种是N日内多个涨停,多个跌幅大的}
活跃股收阴:=COUNT(C/REF(C,1)>=1.098,7)>=1 {最近股价活跃}
 AND MA(VOL,3)>MA(VOL,20)  AND MA(DYNAINFO(37),3)>0.03{成交量活跃} 
  AND C/REF(C,1)<1;{今天开盘涨幅小}

高换手率收阴:= DYNAINFO(37)>0.05 AND (C<O OR C<REF(C,1));{换手率很高}

{---以下统计波动方面的参数---}
底部十字星:=(MIN(C,O)-L)/REF(C,1)>0.04 AND L=LLV(L,10);
避开微弱调整:=EXIST(ABS(C-O)/REF(C,1)>0.04,5) ;
长下影:=C>O AND (O-L)/REF(C,1)>0.04 OR (底部十字星 AND 避开微弱调整)=1 ;{AND (MA(C,20)>REF(MA(C,20),1) OR MA(C,10)>REF(MA(C,10),1));}

{前段时间涨势惊人，今日放量大幅调整,且今日高点不是最近三日高点，也要避开多日盘整后的暴跌}
N3:=COUNT(C/REF(C,1)>=1.098,20)>=2 AND (REF(C,1)-C)/REF(C,1)>=0.055;

{---强烈反转形态---}
X1:=C>O AND (C-O)/C*100>3.0;
X2:=REF(C,1)<REF(O,1) AND (REF(O,1)-REF(C,1))/REF(C,1)*100>3.0 ;
X3:=(C-O)>(REF(O,1)-REF(C,1));
X4:=REF(C,1)<REF(O,1) AND REF(C,1)<REF(C,2) AND (REF(C,2)-REF(C,1))/REF(C,1)*100>3.0;
X5:=(REF(C,2)-REF(C,1))<(C-O);
X6:=C>O AND (C-O)/C*100>3.0;
X9:=REF(C,1)<REF(O,1) AND (REF(O,1)-REF(C,1))/REF(C,1)*100>5.0;
X10:=C>O AND (C-O)/O*100>5.0;
X11:=MACD>REF(MACD,1);
Y1:=(X1 AND X2 AND X3) OR (X4 AND X5 AND X6) OR (X9 AND X10) AND X11 ;
{反转后第二天收阴}
Y3:=REF(Y1,1)=1 AND C<O AND C>REF(O,1);
Y2:=(REF(C,1)-REF(C,2))/REF(C,2)>0.098 AND MAX(O,C)<REF(C,1);
{涨停后第三日收阴}
Y4:=(REF(C,2)-REF(C,3))/REF(C,3)>0.098 AND REF(C,2)>REF(O,2) AND C<O AND (O-C)/REF(C,1)>0.03 AND VOL <REF(VOL,1);
反转后收阴:=Y2 OR Y3 OR Y4;
RET:VOL>0 AND (活跃股收阴 OR 高换手率收阴 OR 反转后收阴 OR 长下影);