CCI (Commodity Channel Index)

The CCI measures how far the current price deviates from its historical average. Values above +100 suggest overbought conditions, below -100 suggest oversold.

Declaration

function init(ctx) {
  ctx.indicator('cci', 'CCI', { period: 20 });
}

Options

Output

Returns a single number[] series. Values are unbounded but typically range from -200 to +200.

Accessing Values

function onBar(ctx, i) {
  const cciValue = ctx.ind.cci[i];
}

Use Cases

Overbought / Oversold

function onBar(ctx, i) {
  const cci = ctx.ind.cci[i];
  
  if (cci < -100) {
    ctx.order.market('ASSET', 1, { signal: 'buy', reason: 'cci_oversold' });
  }
  if (cci > 100) {
    ctx.order.close('ASSET', { signal: 'sell', reason: 'cci_overbought' });
  }
}

Zero-Line Crossover

function onBar(ctx, i) {
  const cci = ctx.ind.cci[i];
  const prevCci = ctx.ind.cci[i - 1];
  
  if (prevCci < 0 && cci > 0) {
    ctx.order.market('ASSET', 1, { signal: 'buy', reason: 'cci_cross_zero' });
  }
}

Calculation

$$CCI = \frac{TP - SMA(TP)}{0.015 \times MeanDeviation}$$

Where $TP = \frac{High + Low + Close}{3}$ (Typical Price)

Related

• RSI - Momentum oscillator with fixed 0-100 range
• Williams %R - Another mean-reversion indicator
• STOCH - Range-based oscillator