Market Structure
The pattern of highs and lows that describes whether a market is trending or ranging.
Also called: structure · price structure
Written by Javier Sánchez Ros
In plain language
Market structure reduces a chart to a sequence: higher highs and higher lows, lower highs and lower lows, or neither.
It gives an objective definition of trend that does not depend on an indicator setting. Either the last swing high was exceeded or it was not.
A structure break — the first lower low in an uptrend, or the first higher high in a downtrend — is the earliest reliable evidence that control has shifted.
Worked through
A structure-based stop against a round-number stop
- Entry
- $146.20
- Last higher low
- $142.90
- Structural stop
- $142.60
- "I will risk 1%" stop
- $144.74
The second stop sits in the middle of nothing. It was derived from the account balance rather than from the chart, so a routine pullback within the existing uptrend takes it out — and the trend then continues without the trader, who concludes the setup failed.
The structural stop is at a level that means something. Below $142.90 the sequence of higher lows is broken, which is the exact condition under which the reason for being long stops being true. Getting hit there is information; getting hit at $144.74 is noise.
This is what structure is for. It supplies levels that were not chosen by you, that other participants can also see, and that correspond to the thesis being right or wrong. A stop needs a reason, and "1% of my account" is a reason about your account, not about the trade.
The order runs one way: find where the idea is invalidated, measure the distance from the entry, and let that distance determine the size. Risk is controlled by how many shares you buy, never by moving the stop to a more convenient place.
Seen on a chart
Why it matters
Structure supplies natural, non-arbitrary levels for stops. The swing low that must hold for your uptrend thesis to survive is exactly where the trade is invalidated.
Common mistakes
- Redefining swing points after the fact so structure always confirms the current position.
- Reading structure on one timeframe while trading on another.
- Calling a structure break on a wick rather than a close.
Keep exploring
These concepts are connected. Understanding one usually makes the next one easier.
A swing high that exceeds the previous swing high, confirming upward momentum.
A swing low that sits above the previous swing low, showing buyers stepping in earlier.
A swing high that fails to reach the previous swing high, showing weakening demand.
A swing low that breaks below the previous swing low, confirming downward momentum.
A sustained directional bias in price, built from a repeating pattern of highs and lows.