Contents
What a footprint chart shows
A footprint chart puts a mini price ladder inside each candle. For every price level in the bar, it shows how much volume traded at that price and how that volume split between buyers hitting the ask and sellers hitting the bid. It is the most information-dense representation of the tick data available on a standard chart.
The split is the entire point. A candle on a normal chart tells you the price moved from A to B. A footprint tells you that at price B, 340 contracts were offered and 90 were taken, which means 250 rested and were absorbed. Those two facts are completely different situations that look identical on a normal chart.
Our guide to reading footprint charts covers the mechanics step by step, and free order flow tooling covers where to get one.
Reading delta off the ladder
Delta for a bar is the difference between aggressive buying and aggressive selling across all its price levels. A bar with 800 bought and 600 sold has a delta of 200, meaning buyers were net aggressive by 200 contracts.
The critical rule is that delta is not bullish or bearish. It is a measure of effort. A bar with a huge delta that makes no price progress is a bar where someone absorbed the aggression. A bar with a small delta that makes a large move is a bar where passive liquidity was thin and price slid through on light participation.
The second rule is that you compare delta across bars, not against an absolute number. A delta of 200 is large in a quiet market and trivial in the London open. Delta trading explained covers the comparison approach.
The two imbalances worth knowing
A diagonal imbalance is a situation where the offer volume at price N is significantly greater than the bid volume at price N-1, or vice versa. In practice, this means the market is leaning one way and has an imbalance in the book that can act as a continuation trigger.
The standard threshold is a ratio of 1.5 or more on at least three consecutive price levels, though some traders use 2 or 3. The reasoning is that a single level's imbalance can be a fluke, but three consecutive levels in the same direction means genuine sustained aggression. That is a real observation, though not a certainty.
A stacked imbalance is when the same price level shows an imbalance in the same direction on three or more consecutive bars. This indicates a defended level, and it is frequently where a move pauses or reverses. We cover stacked imbalances in imbalance trading.
The practical use of imbalances is entry refinement, not signal generation. An imbalance in the direction of your bias, at a level you have already marked as significant, is a much better entry than a blind pullback entry.
The patterns that repeat
Absorption at a level that has been tested before is the most reliable. Price reaches a level, aggressive selling hits it hard, price refuses to move, and the bar closes with a small net move. That combination, prior level plus failed aggressive pressure, is a high-quality signal.
Unfinished business is the second. A bar that ends with a large imbalance still active at its extreme price is a bar where one side is still committed. It frequently continues in the next few bars, and the trade is to join it rather than to wait for the pullback that never comes.
Sweeps are the third. A large aggressive push through a level that immediately reverses, with the bar closing back where it started, is a liquidity grab. The implication is that the side that was swept was wrong, and the move often goes in the opposite direction. Liquidity sweeps in gold covers these in detail.
Reading gold specifically
Gold has three characteristics that change how you read a footprint. First, high volatility relative to most instruments, which means large single-bar delta values are normal and the absolute thresholds that work on quieter pairs do not transfer. Second, the London open and the London fix, at 15:00 London, both produce concentrated volume that can dominate a session profile.
Third, and most relevant, gold's tick size and typical contract sizes mean the ladder is deep. A 20-dollar move on a 5-minute bar gives you a 2000-point ladder, which is far more rows than you can process. In practice you work with the top and bottom of the ladder, the POC, and the large imbalances, and ignore the middle.
This is a case where a session profile is genuinely useful, because it reduces the ladder to the levels that matter. We cover the combination in market profile versus order flow.
What a footprint will not tell you
A footprint is a per-bar, per-price snapshot. It does not tell you the sequence in which trades occurred within the bar, which matters for identifying absorption versus a fast one-way move. Two bars with identical footprints can have completely different internal order.
It also does not tell you the size of individual orders, so it cannot distinguish one large seller from many small sellers. Iceberg detection requires order book data, which we cover in reading the level 2 order book and iceberg order detection.