· The science of orderflow
Learn order flow
Plain-English guides to reading order flow — footprint charts, delta, imbalance, absorption — and options gamma (GEX) — for futures and crypto traders. No jargon, just how to read what the market is actually doing.
Every chart you have ever looked at is a summary. A candle takes thousands of transactions and throws away all but four numbers — and in doing so it makes a rally that buyers fought for look exactly like a rally that drifted up on nobody selling. Those two bars mean opposite things the next morning.
Order flow is what the summary discarded. Not a calculation on price — the transactions themselves: at which price, in what size, and which side was impatient enough to cross the spread to get filled. That last part is the whole game. Someone who lifts the offer is paying for immediacy; someone resting a bid is being paid for patience. Knowing which of them moved the market is the difference between reading a chart and guessing at one.
These guides cover the tools that read it — the footprint chart, delta, the order book and the liquidity heatmap — plus the options layer that moves futures from the outside, dealer gamma. No jargon left undefined, no claim without its limits, and the figures are illustrative unless they say otherwise.
Pick your route
Three ordered paths, depending on where you are today. Four guides each — not a syllabus, a sequence that builds.
Start from zero
Four guides, in order. By the end you can open a footprint, read one bar out loud and say what the buyers and sellers did to each other inside it.
Go under the tape
The footprint shows what traded. These four show what was WAITING to trade, and what the resting book does as price arrives.
Follow the gamma
Futures often move because of hedging in a market you are not watching. These four explain who is forced to buy your rally — and where.
Start here
Order flow trading: the complete guide
The hub. What order flow is, what it shows — aggression, delta, imbalance, absorption, liquidity — and the tools that read it, each linked to a full guide.
Read guide →Footprint · HubFootprint trading: how to trade footprint charts
The hub. The anatomy of a footprint cell, the three patterns you trade off it — absorption, initiative, exhaustion — and where it sits in order flow.
Read guide →Beginners · Start hereOrder flow trading for beginners
Where to start: what order flow actually is, the learning path from footprint to absorption, common beginner mistakes and how to pick a first tool.
Read guide →Footprint · Start hereHow to read a footprint chart
The complete beginner guide: bid vs ask, delta, imbalances, absorption and how to read a healthy candle from a trap.
Read guide →GEX · OptionsWhat is GEX (Gamma Exposure)?
How dealer gamma turns the market mean-reverting or trending — positive vs negative gamma, walls and the zero-gamma flip.
Read guide →Software · Buying guideBest order flow trading software (2026)
ATAS, Bookmap, Sierra Chart, Quantower, NinjaTrader and Senzoukria — honest strengths, weaknesses, price and best-for profile for each.
Read guide →Reading the footprint
What each cell is telling you, and the three patterns worth trading off it.
Order flow imbalance explained
How diagonal imbalances are measured, why stacked imbalances mean momentum, and how unfilled zones become magnets.
Read guide →AbsorptionAbsorption in trading
Heavy aggression met by a wall of passive orders — how to spot the levels big players are defending, and confirm them.
Read guide →Delta
Who crossed the spread, accumulated — and what it means when it stops agreeing with price.
The order book
Resting intention: the ladder, the heatmap, and how to tell a wall from a bluff.
Liquidity heatmap explained
Read resting order-book liquidity over time — walls, spoofing pulls and icebergs — and how it differs from a footprint.
Read guide →DOMHow to read the DOM
The order-book ladder: stacked liquidity, spoofing and pulled orders, icebergs and absorption — reading resting intention live.
Read guide →DOMDOM trading & depth of market guide
The mechanics: reading the spread, cumulative size across levels, big-order/spoofing caution, and pairing the DOM with the footprint.
Read guide →Levels & value
Where the market agreed on price — the references everything else is measured against.
Volume profile: POC, VAH & VAL
Where volume actually traded by price — the POC, value area, high/low volume nodes and the shapes that signal balance vs trend.
Read guide →VWAPVWAP explained
The volume-weighted average price: above vs below, the bands that flag over-extension, and anchored VWAP as support/resistance.
Read guide →Microstructure
The quantitative layer: book pressure, fair value inside the spread, and what it honestly predicts.
OFI explained (the order-book model)
The Cont–Kukanov–Stoikov model: how book-level pressure is computed, why it explains moves better than CVD, and its honest limits.
Read guide →MicrostructureThe Microstructure indicator: micro-price & QI
The fair price hiding inside the spread, the queue imbalance gauge, and how to read the three book signals the indicator draws on the chart.
Read guide →Quant models
Regime and mean reversion — with a sandbox you can drive yourself.
Options & gamma
How dealer hedging pins, accelerates and reverses futures — GEX, walls and the flip.
Gamma walls: call & put wall
Why a call wall is resistance, a put wall is support, and how the highest-gamma strike pins price.
Read guide →Gamma flipZero gamma (gamma flip) level
The price where dealer gamma flips sign — splitting a calm, mean-reverting market from a volatile, trending one.
Read guide →SkewVolatility skew explained
Put skew vs call skew, the 25-delta risk reversal, and how skew often turns before price does.
Read guide →Choosing a tool
Prop firm rules, what is genuinely free, and an honest look at what each platform does well.
Is order flow software allowed on funded accounts?
What prop firm rules actually prohibit — execution, automation, copy trading — and the read-only test that clears any analysis tool.
Read guide →Rithmic · ConnectRithmic footprint software: native R | Protocol
Connect your prop firm's Rithmic login directly — footprint rendered from R | Protocol over WebSocket, read-only, no NinjaTrader or terminal in between.
Read guide →Footprint · GEXFootprint software with GEX included
Why footprint platforms and GEX services almost never meet, what stacking two subscriptions costs, and the integrated exception.
Read guide →Footprint · FreeCan you get footprint charts for free?
An honest look at free previews, free tiers and the crypto path that needs no broker account — and what the fine print actually limits.
Read guide →Order flow terms, defined
The words that come up across every guide. One line each; the term links to the guide that earns it.
- Order flow
- The record of who was willing to cross the spread to get filled, and who sat still and waited. It is transaction data, not a calculation on price.
- Footprint chart
- A candle opened up: instead of four prices, it shows every price the bar traded at and how much was bought at the offer versus sold into the bid at each one.
- Delta
- Volume bought at the offer minus volume sold into the bid. Positive delta means aggressive buyers were the ones crossing the spread.
- Cumulative delta (CVD)
- Delta added up across the session. Its value is in divergence: price making a new high on less net buying than the last one is a move losing its fuel.
- Imbalance
- One side outweighing the other by a set ratio — measured diagonally, comparing the ask at one price against the bid one tick below, because those two orders were competing for the same fill.
- Absorption
- Heavy aggressive volume hitting a price that refuses to move, because a large passive order is soaking up everything thrown at it. It marks a level someone is defending.
- DOM (depth of market)
- The ladder of resting limit orders above and below the market. It shows intention rather than action — and intention can be withdrawn before it is ever tested.
- Liquidity heatmap
- The order book drawn over time, brightness by resting size. It reveals whether a wall held, was eaten, or vanished the moment price came near it.
- Volume profile · POC · value area
- Volume organised by price instead of by time. The point of control is where the most contracts changed hands; the value area holds roughly 70% of them.
- VWAP
- The volume-weighted average price — the average price actually paid so far, weighted by size. Institutions are measured against it, which is part of why it behaves like a magnet.
- GEX (gamma exposure)
- Aggregate dealer gamma across the option chain. Its sign decides whether hedging flows dampen every move or amplify it.
- Hurst exponent
- A single number measuring a market’s memory: below 0.5 moves tend to reverse, at 0.5 they are a coin toss, above 0.5 they persist. It describes behaviour, never direction.
Common questions
- What is order flow trading?
- Order flow trading reads the transactions themselves rather than a calculation on price. It asks who was willing to cross the spread to get filled and who sat still and waited — because a move carried by aggressive buyers and a move that simply drifted up on no volume look identical on a candle chart, and behave completely differently afterwards. The tools that read it are the footprint chart, delta, the order book and the liquidity heatmap.
- Is order flow worth learning if I already use indicators?
- They answer different questions. An indicator is a function of past price — it tells you what price has already done, restated. Order flow is transaction data: what actually changed hands, at which price, and which side was the aggressor. It is most useful at levels you already care about, as the read that tells you whether the level is being defended or given up. It is not a replacement for having a plan.
- How long does it take to learn to read a footprint chart?
- Reading one bar correctly — bid volume, ask volume, delta, where the volume clustered — takes an afternoon. Recognising absorption and exhaustion in real time, without hindsight, takes months of screen time. The honest sequence is: learn the anatomy first, then watch it live on one instrument until the patterns stop needing to be looked up.
- What do I need to see real order flow data?
- Genuine order flow needs tick-by-tick data with the aggressor side, which retail chart packages usually do not carry. In futures that means a data feed such as Rithmic, or a bridge from a platform that already has it (NinjaTrader, Quantower). In crypto the exchange websocket carries it and no broker account is needed. Anything reconstructed from one-minute bars is an approximation.
- Is order flow software allowed on a funded or prop firm account?
- Read-only analysis software is not what prop firm rules prohibit. What they restrict is execution: automated order placement, copy trading between accounts, and high-frequency strategies. A tool that reads your feed and draws charts without ever sending an order passes that test — but the wording differs between firms, so check your own agreement rather than a general answer.
- What is the difference between order flow and volume profile?
- Volume profile organises volume by price over a period: where the market agreed, where it did not. Order flow is finer and time-ordered: it shows who was aggressive at each price as it happened. In practice they are used together — the profile picks the level, the order flow tells you what is happening at it right now.