Order Flow
Iceberg Order Detection
A hidden order at one price only shows a slice of its real size. Every time that slice gets filled, it refills right back, so the visible size at that price keeps reappearing far more than a normal resting order ever would.
Click every refill you spot
The gold line below is the displayed size sitting at one watched price level over time, one tick at a time. A normal resting order gets eaten and stays gone. An iceberg gets eaten, drops hard, then reappears near its old size within a tick or two, a real sawtooth. Click on the chart the instant you think you've spotted a refill. When the tape ends, call it: genuine iceberg or a normal order. Both your spotting accuracy and your final call are graded against a mechanical rule, not a guess: a refill only counts if size drops to 40% or less of what it was, then recovers to at least 70% of that prior level within one tick.
Displayed size at the watched level. Click on a drop-then-recover point the moment you see it.
Tape running. Watch the size at this level.
How it works
- The tell is the shape, not any single number. One big drop in displayed size means nothing on its own, orders get filled and cancelled constantly. A drop followed by a near-full recovery, repeated more than once at the same price, is the pattern that separates an iceberg from ordinary size coming and going.
- Refill detection is a fixed, mechanical rule. This tool only counts a refill when size falls to 40% or less of its pre-drop level and then climbs back to at least 70% of that same pre-drop level within a single tick. Anything softer than that is left uncounted on purpose, so the count reflects a real pattern instead of ordinary noise.
- Every iceberg eventually runs out. The hidden parent order behind the visible slice is finite. A genuine iceberg in this simulation refills a handful of times, then the drops stop recovering, exactly like a real large order finishing its execution.
- Spotting and verdict are graded separately. Clicking near a real refill counts as a hit, clicking somewhere nothing happened counts as a false click, and your final Iceberg/Normal call is graded independently against how many genuine refills the mechanical rule actually found in that session's numbers.
Where this breaks
A refilling order and a busy price level can look identical from outside
This tool can show a size-over-time pattern and score whether it matches a fixed mechanical definition of a refill. It cannot prove that a single hidden order is actually behind the pattern. A genuinely busy price level, several unrelated traders independently resting and replacing orders near the same round number, can produce a sawtooth that looks like a refilling iceberg, and there is no way to tell the two apart from displayed size alone, on this page or on a real Level 2 feed without matching engine-level order IDs most retail traders never see. The specific failure mode of trading off this pattern is treating every repeated refill as guaranteed support or resistance: a real iceberg can still get fully exhausted and stop refilling exactly when price finally needs it to hold, since the hidden size behind it was never unlimited to begin with.