Vol Delta Histogram

See the net difference between taker buy and sell volume per candle — the clearest measure of who is in control of the market right now.

What is Vol Delta Histogram?

Vol Delta Histogram calculates the difference between taker buy volume and taker sell volume for each candle, displaying the result as a histogram below the price chart. A positive bar (green) means buyers were more aggressive than sellers during that candle — more volume was executed at the ask price than at the bid price. A negative bar (red) means sellers dominated — more volume was executed at the bid price.

Unlike raw volume, which only tells you how much was traded, Vol Delta tells you the directional intent behind that volume. Two candles can have identical total volume but completely different delta readings — one might show overwhelming buying pressure while the other shows overwhelming selling pressure. This distinction is critical for understanding whether a price move has genuine conviction or is being driven by one side being forced out.

The histogram is displayed as a sub-chart indicator below the main price chart, with bars extending above and below the zero line. The magnitude of each bar reflects how lopsided the aggression was during that candle — large bars indicate a clear dominance by one side, while small bars near zero suggest a balanced contest.

Key Concepts

• Positive Delta (Green Bar): Taker buy volume exceeded taker sell volume — buyers were more aggressive, lifting offers. The larger the bar, the more dominant the buying pressure
• Negative Delta (Red Bar): Taker sell volume exceeded taker buy volume — sellers were more aggressive, hitting bids. The larger the bar, the more dominant the selling pressure
• Taker Volume: Volume from market orders (or aggressive limit orders that immediately execute) — these are the traders who cross the spread and move price
• Delta Divergence: When price moves in one direction but delta consistently reads in the opposite direction — a powerful warning signal that the move lacks genuine participation
• Cumulative Delta: Tracking the running sum of delta over time reveals the sustained directional bias. A rising cumulative delta with rising price confirms a healthy trend

How to Use Vol Delta Histogram

1. Open Chart from the sidebar and navigate to the indicator settings
2. Enable the Vol Delta Histogram indicator — it will appear as a histogram in a sub-chart below the main price chart
3. Observe the direction and size of delta bars relative to the corresponding price candles
4. Identify clusters of consistently positive or negative delta to gauge sustained directional pressure
5. Watch for divergences between delta direction and price direction as early reversal signals

What to Look For

• Bullish signals: Consistent positive delta bars during an uptrend confirm that buyers are actively driving the move — the trend is backed by genuine aggressive demand. A shift from negative to positive delta after a sell-off indicates that buyers are stepping in and absorbing selling pressure, often marking a turning point. Large positive delta spikes at support levels signal that aggressive buyers are defending that price zone with real capital.
• Bearish signals: Persistent negative delta during a rally reveals that sellers are more aggressive even as price rises — this is often short covering or passive buying absorbing market sells, not fresh demand. The rally is fragile. A shift from positive to negative delta during an uptrend warns that sellers are gaining control. Large negative delta spikes at resistance confirm that sellers are aggressively rejecting higher prices.
• Key patterns: Delta divergence is one of the highest-probability reversal signals. When price makes a new high but delta is declining (lower positive bars or turning negative), it means the buying aggression that drove the previous leg is fading — the market is rising on inertia, not conviction. The same applies in reverse: price making new lows while delta turns less negative or positive suggests selling pressure is exhausting. A “delta flip” — where delta abruptly switches from one extreme to the other — often coincides with the exact candle of a reversal. Multiple consecutive large delta bars in one direction typically indicate institutional flow or a liquidation cascade.
• Combine with: Volume for total activity context alongside the directional breakdown, Open Interest to see whether delta is opening new positions or closing existing ones, Funding Rate to cross-reference leveraged positioning bias with actual aggressive flow, Trade Footprint for per-price-level detail within each candle’s delta

Supported Exchanges

Tips

• Vol Delta is most powerful at extremes — small delta readings near zero are noise, but large spikes or sustained runs in one direction carry real information
• Always read delta in context with price movement. Positive delta during a price decline is actually more bullish than positive delta during a price rise, because it means buyers are fighting to hold ground against selling pressure
• Delta on higher timeframes (4h, daily) gives you the macro directional bias; delta on lower timeframes (5m, 15m) helps with entry timing within that bias
• Be cautious during low-volume periods (weekends, holidays) — delta readings can appear extreme simply because total volume is thin, making small imbalances look significant