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Cumulative Delta — and Why It Is Not on Your Chartthe order flow tool retail spot FX does not have

Evidence: WeakProfessionalOrder flow · Data

Cumulative delta is the running total of volume that traded at the ask minus volume that traded at the bid — a genuine measure of which side was more aggressive. On a futures exchange it is real data and it is genuinely informative.

On a retail spot FX feed it does not exist. There is no consolidated tape to classify, so any spot 'delta' indicator is inferring the sign from where price closed inside the bar. That is a price indicator wearing order flow's clothes, and traders pay for it believing otherwise.

This page is here so the distinction is written down, and so the version that does work has somewhere to be described.

Category
Order flow · Data
Timeframe
Any
Where it is real
Futures and other exchange-traded instruments with a published tape
Where it is inferred
Every retail spot FX platform, without exception
Tools
A futures data feed with bid/ask classification, if you want the real thing

Valid setup

OF-10 · CUMULATIVE DELTA — THE SHAPE OF THE TRADE, ON FUTURES ONLY price makes a lower low while the aggressive selling does not — a reading available on a tape, not on a spot feed FUTURES ONLY 1.0877 1.0889 1.0902 1.0914 1.0926 1.0939 1.0951 PRICE MAKES A LOWER LOW HERE — ON A TAPE, THE DELTA WOULD NOT TP1 = 2R 1R TP1 = 2R ENTRY = close back above the divergent swing STOP = below the divergent low + ATR buffer 1 2 3 4 1.0938 1.0902 1.0884 ① First low — with, on futures, a matching delta low ② Lower price low — but less aggressive selling behind it ③ That second half cannot be measured on spot FX ④ On futures: close back above the swing — enter ⑤ On spot: use the activity filter instead, and expect less ⑥ Ask any delta vendor which tape they classify

Exact rules

Entry

  • If you trade currency futures: cumulative delta is available and the classic use is divergence — price makes a new low while cumulative delta does not, meaning the selling was less aggressive than the price move suggests.
  • Require the divergence to occur at a level, as with every other page in this family. Divergence in open space is not a setup.
  • Trigger: a close back above the swing that formed the divergence.
  • If you trade spot: you do not have this tool. The nearest honest substitute is the relative activity filter in this book, and it is a weaker claim.

Stop loss

  • Beyond the extreme that created the divergence, plus an ATR buffer.
  • On futures, also exit if cumulative delta makes a new low — the reason for the trade is the delta, not the price.
  • Risk 0.5%.

Take profit / exit

  • TP1 at 2R, TP2 at the prior swing.
  • Time stop at fifteen bars — delta divergence is a short-horizon reading.
  • Before buying any indicator that promises order flow on a spot pair, ask the seller which tape it classifies. There is no answer to that question, and knowing that is worth more than the indicator.

Build Cumulative Delta — and Why It Is Not on Your Chart

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More from Order flow & volume

London 16:00 Fix Flowmonth-end rebalancingSigned Order Flow Continuationtrade with the tape, not against itVolume-Confirmed Liquidity Sweepthe spike is the evidence

Trading carries risk and most retail accounts lose money. Nothing on this page is financial advice or a recommendation to trade. The chart is an illustration of the rules on constructed candles — it is not a record of a trade and not a backtest.