Delta Divergence identifies candles where the price direction and the delta (buy volume minus sell volume) disagree. This is one of the simplest yet most effective order flow signals: when a candle closes green but the net delta is negative, it means sellers were actually more aggressive despite the price increase. The opposite also applies — a red candle with positive delta means buyers were dominant despite the price decline.
These contradictions between price action and underlying order flow often mark exhaustion points and potential reversals.
How It Works
For each completed candle, the indicator compares two values:
- Price direction: Did the candle close higher (bullish) or lower (bearish) than its open?
- Net delta: Was the total buy volume greater (positive delta) or less (negative delta) than the total sell volume?
When these two values disagree, a divergence dot is placed on the candle.
Signal Types
| Signal | Candle Close | Delta | Interpretation |
|---|
| Bearish divergence | Up (green candle) | Negative | Sellers were more aggressive, but price still rose. Buying pressure may be exhausting. |
| Bullish divergence | Down (red candle) | Positive | Buyers were more aggressive, but price still fell. Selling pressure may be exhausting. |
Lookback and Filtering
The indicator uses a lookback mechanism to ensure that divergence signals occur at meaningful price levels rather than in the middle of random noise.
| Parameter | Description | Default |
|---|
| lookbackPeriod | Number of bars used to evaluate the context of the divergence. The indicator checks whether the current candle is at a local price extreme within this window. | 20 |
| localExtremumPeriod | Number of bars on each side of the current candle required to confirm it as a local high or low. A value of 2 means the candle must be higher (or lower) than the 2 candles on each side. | 2 |
The localExtremumPeriod acts as a noise filter. Higher values (3-5) ensure that divergence signals only appear at more significant swing points, but they also introduce a delay since the extremum cannot be confirmed until the required number of subsequent bars have formed.
Visual Settings
| Parameter | Description | Default |
|---|
| bullishColor | Color of the dot for bullish divergence signals. | #84cc16 |
| bearishColor | Color of the dot for bearish divergence signals. | #ef4444 |
| dotSize | Size of the divergence dot in pixels. | 8 |
Alert Rules
| Event | Fires When |
|---|
| new_divergence | A new delta divergence signal is confirmed at a local extremum. The alert payload includes the direction (bullish or bearish) and the candle timestamp. |
Reading Delta Divergence
At Swing Highs (Bearish Divergence)
When price makes a local high and the candle closes green, but delta is negative, it means:
- Sellers were more aggressive than buyers inside that candle.
- Despite the selling pressure, price managed to close higher — likely due to thin liquidity above.
- The move up may be exhaustion rather than genuine buying interest.
- If subsequent candles fail to continue higher, the bearish divergence is confirmed.
At Swing Lows (Bullish Divergence)
When price makes a local low and the candle closes red, but delta is positive, it means:
- Buyers were more aggressive than sellers inside that candle.
- Despite the buying pressure, price still closed lower — likely due to thin liquidity below.
- The move down may be exhaustion rather than genuine selling interest.
- If subsequent candles fail to continue lower, the bullish divergence is confirmed.
Practical Usage
Best Timeframes
| Timeframe | Suitability | Notes |
|---|
| 1m - 5m | Good | Frequent signals, best for scalping. Many will be noise. |
| 15m - 1h | Excellent | Balanced signal frequency and reliability. Ideal for intraday trading. |
| 4h - 1d | Strong | Fewer signals, but each one carries significant weight for swing trading. |
- Market structure levels: Divergence at a known support or resistance level is far more actionable than divergence in open space.
- Absorption Alpha: If both absorption and delta divergence appear at the same level, the confluence is strong.
- Volume Profile VAH/VAL: Divergence at a value area boundary suggests the market is rejecting an attempt to move outside fair value.
- CVD Divergence: When single-candle delta divergence aligns with a multi-bar CVD divergence, the signal covers both micro and macro timeframes.
Common Pitfalls
- Trending markets: In a strong trend, delta divergence signals against the trend are frequently overwhelmed by momentum. Use divergence as a reversal signal primarily at structural levels, not in the middle of a trend.
- Low volume candles: Divergence on a candle with very low total volume is less meaningful. The delta difference may be just a few contracts rather than a genuine shift in aggression.
- Ignoring the lookback: The lookback period and extremum filter exist for a reason. Without them, divergence would appear on nearly every other candle, making the signal useless.
Delta divergence at market structure levels (previous day high/low, weekly open, monthly VWAP) is one of the highest-probability reversal setups in order flow trading. When you see a divergence dot at a key level, watch the next 2-3 candles closely for follow-through.