OBV指标公式：以KDJ的写法，看上去，直观，简洁，明了。

N:=9;

TYP := (HIGH + LOW + CLOSE)/3;

RS:=SUM(IF(TYP>REF(TYP,1),TYP*VOL,0),N)/SUM(IF(TYP<=REF(TYP,1),TYP*VOL,0),N);

MFI:=100-100/(1+RS);

资金流量:MFI,NODRAW;

A1:=SUM(IF(MFI>REF(MFI,1),VOL,IF(MFI<REF(MFI,1),-VOL,0)),0);{OBV}

RSV:=(A1-LLV(A1,34))/(HHV(A1,34)-LLV(A1,34))*100;

K:SMA(RSV,5,1);

D:SMA(K,3,1);

J:3*K-2*D;

50,COLORGRAY;

80,COLORRED;