学会这个方法，抓10倍大牛股的概率提升10倍>>

OBV:SUM(IF(CLOSE>REF(CLOSE,1),VOL,IF(CLOSE<REF(CLOSE,1),-VOL,0)),0)/10000;

MAOBV:MA(OBV,30),colorred,LINETHICK2;

SUM(IF(CLOSE>REF(CLOSE,1),VOL,IF(CLOSE<REF(CLOSE,1),-VOL,0)),0)/10000