指标的核心功能是捕捉强势股在启动初期出现的“牛回头”形态，即股价在上涨过程中短暂回调但不破关键支撑，预示着可能再次上涨的买入机会。
主要功能
识别特定K线形态：专门筛选出一种特殊的K线组合。即股价在上涨过程中，某日虽然收盘上涨，但盘中曾出现回调，形成一种“长下影线”的K线形态，这通常代表主力资金在洗盘。
过滤优质标的：通过排除ST股、科创板股票，并要求股票上市时间超过60个交易日，来筛选出盘面较大、走势相对稳健的优质标的。
操作策略
买入信号：当K线图上出现“★牛回头”的黄色文字标记和图标时，即为买入信号。这代表股票出现了符合条件的“牛回头”K线形态。
操作要点：出现信号后，可以择机买入。但需注意，买入后应设置好止损位，如果股价跌破信号K线的最低点，则应考虑及时止损离场，以控制风险。
{主图源码如下}
EXP1:EMA(CLOSE,12);
EXP2:EMA(CLOSE,50);
A1:=EMA((CLOSE+HIGH+OPEN)/3,4);
A2:=CLOSE>A1;
A3:=OPEN>REF(CLOSE,1) AND A2;
A4:=CLOSE>REF(CLOSE,1);
A5:=BARSCOUNT(CLOSE)>=60;
A6:=CLOSE< OPEN;
A7:=A3 AND A4 AND A6;
A8:=NOT(NAMELIKE('ST') OR NAMELIKE('*ST'));
A9:=IF(CODELIKE('688'),0,1);
A10:=EMA(CLOSE*70,3);
A11:=EMA((CLOSE*1.1-CLOSE*0.9)*80,3);
A12:=A10/(A10+A11)*100;
A13:=HHV(HIGH,9)-LLV(LOW,9);
A14:=HHV(HIGH,9)-CLOSE;
A15:=CLOSE-LLV(LOW,9);
A16:=A14/A13*100-70;
牛回头:=FILTER(A7,10) AND A5 AND A8 AND A9 AND A16;
DRAWICON(牛回头,L,9);
DRAWTEXT(牛回头,L*0.98,'★牛回头'),COLORYELLOW;
{副图源码如下}
A1:=EMA((CLOSE+HIGH+OPEN)/3,4);
A2:=CLOSE>A1;
A3:=OPEN>REF(CLOSE,1) AND A2;
A4:=CLOSE>REF(CLOSE,1);
A5:=BARSCOUNT(CLOSE)>=60;
A6:=CLOSE< OPEN;
A7:=A3 AND A4 AND A6;
A8:=NOT(NAMELIKE('ST') OR NAMELIKE('*ST'));
A9:=IF(CODELIKE('688'),0,1);
A10:=EMA(CLOSE*70,3);
A11:=EMA((CLOSE*1.1-CLOSE*0.9)*80,3);
A12:=A10/(A10+A11)*100;
A13:=HHV(HIGH,9)-LLV(LOW,9);
A14:=HHV(HIGH,9)-CLOSE;
A15:=CLOSE-LLV(LOW,9);
A16:=A14/A13*100-70;
牛回头:FILTER(A7,10) AND A5 AND A8 AND A9 AND A16 COLORMAGENTA DOTLINE;
DRAWICON(牛回头,1,9);
DRAWTEXT(牛回头,0.6,'★牛回头'),COLORYELLOW;
{选股源码如下}
A1:=EMA((CLOSE+HIGH+OPEN)/3,4);
A2:=CLOSE>A1;
A3:=OPEN>REF(CLOSE,1) AND A2;
A4:=CLOSE>REF(CLOSE,1);
A5:=BARSCOUNT(CLOSE)>=60;
A6:=CLOSE< OPEN;
A7:=A3 AND A4 AND A6;
A8:=NOT(NAMELIKE('ST') OR NAMELIKE('*ST'));
A9:=IF(CODELIKE('688'),0,1);
A10:=EMA(CLOSE*70,3);
A11:=EMA((CLOSE*1.1-CLOSE*0.9)*80,3);
A12:=A10/(A10+A11)*100;
A13:=HHV(HIGH,9)-LLV(LOW,9);
A14:=HHV(HIGH,9)-CLOSE;
A15:=CLOSE-LLV(LOW,9);
A16:=A14/A13*100-70;
牛回头:FILTER(A7,10) AND A5 AND A8 AND A9 AND A16 ;
