Cumulative Delta
A running total of aggressive buying minus aggressive selling — the session-long scoreboard of which side is initiating.
What is Cumulative Delta?
Cumulative delta (CVD) tracks the net aggression in a market: every contract bought at the ask adds, every contract sold at the bid subtracts. The running line shows whether buyers or sellers have been initiating all session — and, when compared against price, whether that aggression is actually working.
How Cumulative Delta works
The two canonical reads: confirmation — price making new highs with delta making new highs means initiative buying is being rewarded; and divergence — price holding a low while delta plunges means someone passive is absorbing the sell aggression, a classic reversal precondition. Resets matter: session-anchored delta answers different questions than continuous delta.
Worked example
ES grinds sideways at a key support while cumulative delta drops steadily — thousands of contracts hitting the bid, yet price refuses to break. That divergence is passive absorption. When delta flattens and price lifts off the level, the failed-seller squeeze provides the trade, with risk defined below the absorption low.
Cumulative Delta vs related concepts
Side-by-side comparison of Cumulative Delta against the most commonly confused alternatives.
| Concept | Definition | Category |
|---|---|---|
| Cumulative Delta this term | A running total of aggressive buying minus aggressive selling — the session-long scoreboard of which side is initiating. | Strategies |
| Order Flow | The study of executed trades and resting liquidity — who is buying, who is selling, and at what price — as the basis for trade decisions. | Strategies |
| Footprint Chart | A chart type that displays executed bid and ask volume at every price inside each candle — the X-ray view of what happened within the bar. | Strategies |
| Depth of Market | A real-time display of all resting buy and sell limit orders at every price level — the "order book" view that shows market structure and liquidity. | Futures Mechanics |
Why traders fail Cumulative Delta
Trading delta divergences in the middle of the range — divergence only carries meaning where a real decision level gives it stakes. Ignoring the reset anchor: comparing overnight-inclusive delta to RTH price action mixes two different auctions and produces false reads.
Frequently asked questions about Cumulative Delta
What is cumulative delta in trading?
A running sum of aggressive buys (at the ask) minus aggressive sells (at the bid). It shows which side is initiating and whether that aggression is moving price.
What does a delta divergence mean?
Price holding while delta pushes hard the other way — evidence of passive absorption. At meaningful levels it's a classic precondition for reversals, as trapped aggressors are forced to unwind.