Break of structure

What it means

A market that is trending leaves a trail of swing highs and swing lows. A break of structure is the moment price closes past the most recent one of those in the direction of travel: above the last swing high in a rising market, below the last swing low in a falling one.

The word BREAK is doing specific work. Trading through a level intrabar and closing back inside it is a different event with a different name, and treating the two as the same is the most common way this term is used loosely. What counts here is where the bar finished.

How we detect it

The engine needs forty bars. It takes the swing points the rest of the analysis already uses — a bar whose high or low dominates the two bars on each side — and walks backwards through the most recent thirty bars looking for the first CLOSE beyond one of them.

A swing is only eligible if it had already been confirmed. A fractal is not visible until two more bars have printed after it, so a swing formed at bar 54 cannot be broken at bar 55: the chart could not have drawn it yet. Ignoring that lag would report breaks that were never on screen.

The most recent qualifying break is the one reported, and only one is reported per timeframe. The break is then labelled against what the structure read BEFORE it, from the labels whose swings had also been confirmed by then — so the break never gets to decide what it broke away from.

When the read carries information

• The chart has been making distinguishable swings. A market that has gone almost straight up prints few fractals, and a break needs one to break.
• The timeframe is the one the reader is asking about. A daily break and a 15-minute break are different statements about the same market, and this engine reports each frame separately rather than blending them.
• The prior structure was directional. The label — continuation or otherwise — is only as good as the bias it is measured against.

When it misleads

• In a range, price crosses the same swing repeatedly and every crossing qualifies. The engine reports the most recent one, which in a range is a statement about noise. The structure reading printed beside it is what says so.
• After a gap open or a halt, the first close can sit far beyond a swing without anything resembling a trend step having happened.
• On a thin instrument a swing can be a single print rather than a level many participants recognised, and breaking it means correspondingly less.

How it reaches you

Our answers describe this as a close beyond a prior swing, and say whether it agreed with the structure before it. That is an observation about a bar that has already printed — never a statement about what the next one will do.

The reading is approximated from price bars alone. Where this term appears in its original literature it also carries claims about order flow, which this publication does not license and does not infer.