What order flow actually means
Order flow is the real-time record of buy and sell transactions and resting orders in a market — every trade that fills, every large order that sits on the book, every cancellation. It's the raw material price is made from.
Most retail traders never look at it directly. They look at price, and at indicators calculated from price — moving averages, RSI, MACD — which are all several steps removed from what's actually happening between buyers and sellers right now.
Why price alone isn't enough
Two candles can look identical — same open, same close, same size — and represent completely different situations underneath. One might have formed on heavy, aggressive buying that overwhelmed sellers. The other might have drifted up on almost no volume, with barely any resistance to test.
A regular candlestick chart can't tell these apart. That difference matters enormously for what happens next, and it's exactly what order flow tools are built to reveal.
The core tools
Footprint charts — show the buy and sell volume traded at every individual price level inside each candle, not just open/high/low/close. This is the closest thing to seeing the actual battle between buyers and sellers.
Cumulative Volume Delta (CVD) — a running total of buy volume minus sell volume over time. A rising CVD while price stalls, or a falling CVD while price rises, is a classic divergence worth watching.
Order book depth — the live list of resting buy and sell orders at each price. Depth shows where size is currently parked, though — as covered separately — not every large order is what it appears to be.
Absorption: the concept that ties it together
Absorption happens when one side is aggressively trading into a price level — buying or selling in size — but price barely moves. That means someone on the other side is quietly absorbing all of that aggression with resting size, without giving ground.
Absorption at a level often precedes a reversal: the aggressive side eventually gives up once it becomes clear the level won't break, and price snaps back the other way. Spotting it requires seeing volume-at-price, which is exactly what a footprint chart shows and a normal candlestick chart cannot.
A realistic starting checklist
- Learn to read a single footprint candle before anything else — buy volume, sell volume, delta, at each price level.
- Watch CVD alongside price for a few sessions without trading, just to see how the two normally move together.
- Pick one pattern (absorption, or a liquidation cluster — covered in the next guide) and study it in isolation before combining signals.
- Track your own observations against a real outcome log. A pattern that "feels" reliable and one that's statistically confirmed are often different things.