OBV (On Balance Volume) · 帮助中心 | TradersWeek

OBV keeps a running total that adds the bar's volume on an up-close and subtracts it on a down-close. Rising OBV confirms the buying pressure behind an uptrend; OBV/price divergence often precedes a reversal. Copy the version for your platform.

Pine Script

//@version=5
indicator("On Balance Volume", overlay=false)
obv = ta.cum(math.sign(ta.change(close)) * volume)
plot(obv, title="OBV", color=color.blue, linewidth=2)

MQL4 · OBV.mq4

#property indicator_separate_window
#property indicator_buffers 1

double ObvBuffer[];

int OnInit() {
  SetIndexBuffer(0, ObvBuffer);
  IndicatorShortName("OBV");
  return 0;
}

int OnCalculate(const int rates_total, const int prev_calculated, const double &close[]) {
  for (int i = prev_calculated; i < rates_total; i++)
    ObvBuffer[i] = iOBV(NULL, 0, PRICE_CLOSE, i);
  return rates_total;
}

MQL5 · OBV.mq5

#property indicator_separate_window
#property indicator_buffers 1

double ObvBuffer[];

int OnInit() {
  SetIndexBuffer(0, ObvBuffer);
  IndicatorSetString(INDICATOR_SHORTNAME, "OBV");
  return INIT_SUCCEEDED;
}

int OnCalculate(const int rates_total, const int prev_calculated,
  const datetime &time[], const double &open[], const double &high[],
  const double &low[], const double &close[], const long &tick_volume[],
  const long &volume[], const int &spread[]) {
  for (int i = prev_calculated; i < rates_total; i++)
    ObvBuffer[i] = iOBV(NULL, 0, PRICE_CLOSE, i);
  return rates_total;
}

EasyLanguage

variables: MyOBV(0);
MyOBV = OBV();
Plot1(MyOBV, "OBV");

MetaStock

{On Balance Volume}
vol := OBV();
vol

To use it inside dtcharts, paste any version into the Script Converter and it becomes a native indicator on your chart.