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Corrections: why they are harder than the impulse
The impulse has three hard rules. A correction has none. That is where most wrong counts come from, and from it follows the only sensible conclusion: you do not trade inside a correction.
A pullback runs in three waves — A, B, C — not five. That is the only thing always true about corrections. Everything else is a set of shapes with names, and not one of them gives an invalidation price the way the impulse rules do. That is exactly why a count almost always breaks on the correction: there is nothing there to hold it.
The three basic shapes
| Shape | What it looks like | How it is recognised |
|---|---|---|
| zigzag | a sharp pullback that travels far | wave B is short, C goes beyond A |
| flat | sideways shuffling roughly in place | wave B nearly returns price to the start |
| triangle | narrowing swings, five parts | each swing shorter than the last |
A correction after an impulse, in numbers
The impulse ended at 2,260. Wave A: a pullback to 2,040. Wave B: a bounce to 2,180 — roughly two thirds of A's travel, so it does not look like a flat, more like a zigzag. Wave C: to 1,960, that is, below A's end. The correction is complete and took back about 38% of the whole impulse. Note what is NOT here: not a single rule that would say "if price goes below such-and-such, this is not a correction". Corrections do not have such a number.
The main consequence: do not trade inside a correction
With no invalidation price there is no stop that means anything. Inside a pullback you may always turn out to be in the middle of a more complex shape — a double, a triple, one with a triangle in the middle — and every new leg will look like the start of a move. There is one sensible way to work with a correction: wait for it to finish and trade the impulse that follows. Waiting is dull, but that waiting is exactly what gets paid for.
Taking a correction for the start of a new move
The costliest mistake in the subject, and it costs people more than all the others together. Wave A looks like the start of a reversal: the move is sharp, the structure is convincing. Somebody opens a position against the main trend, and wave B — an ordinary bounce inside the correction — takes them out at the stop. The sign that helps: a correction OVERLAPS itself, its legs enter each other's territory. An impulse does not do that — there wave four does not touch wave one.
Expecting a correction to end at a specific level
"A pullback to 61.8% and a reversal" is a phrase that sounds precise and means nothing. Corrections end anywhere: some at 23%, some at 78%, some go beyond the start of the impulse — and then the whole count was wrong. A level is a place to LOOK, not a place to buy. The difference is that in the second case you enter on a schedule, and in the first on the fact that the shape has completed.
Alternation is a guideline, but a useful one
If wave two was a sharp zigzag, wave four more often turns out shallow — a flat or a triangle, and the other way round. The use of this is exactly one thing: do not expect wave four to resolve as quickly as wave two did, and do not leave a position early simply because the pullback is going slowly. There is no invalidation price here and it cannot serve as a stop.
Corrections are where bar replay separates knowledge from illusion. On finished history the shape of a pullback is obvious and looks predictable. In replay you watch the same correction pretend three times to be over and then continue, and only then does it become clear why nobody trades inside one.
The chart and bar replayTwenty corrections and how many legs they ran
In bar replay find twenty pullbacks after a clear impulse. For each, mark the moment you decided the correction had finished — and keep playing. Write down how many times another leg followed your mark. Usually that happens in about half the cases, and that number explains why a stop for an entry "on the completion of a correction" goes beyond the start of the whole pullback rather than the nearest local extreme.
Wave C went below the start of the impulse. What does that mean for the count?
That the impulse was labelled wrongly. By definition a correction does not take back the whole move: if price went below the point the impulse started from, then what you took for five waves up was not that. It is an unpleasant but useful case: it gives what corrections usually lack — a clear fact instead of an opinion. The right action is to erase the count, not to find it a new name.
Why do corrections have no hard rules while the impulse does?
Because an impulse is a move that has direction and force, and its shape is constrained by the mechanics themselves: for the move to continue, the pullbacks inside it must not eat the previous leg. A correction, by its nature, is a pause — and one can pause in many ways: sharply, sideways, in steps, with a rest in the middle. The absence of rules here is not a gap in the theory but a property of what it describes.