Market structure is the first thing to read on a chart, before any indicator. It answers a simple question: who controls the move right now, buyers or sellers? The acronyms around it (BOS, CHoCH, EQH, BSL…) can be intimidating, but the ideas are simple. The hard part is applying them with consistent rules.
Highs and lows
Everything starts from turning points: a swing high is a high surrounded by lower highs on each side, a swing low is a low surrounded by higher lows.
How many candles on each side? It is the first setting to fix, and then never change. With two candles on each side, you will see many small highs; with ten, only the big ones. There is no universally right number, there is a constant number.
- Uptrend: higher and higher highs, and higher and higher lows.
- Downtrend: lower and lower highs, and lower and lower lows.
- Range: neither one nor the other, price swings between two bounds.
The BOS: the trend continues
A BOS (Break of Structure) happens when price goes beyond the last high in an uptrend, or the last low in a downtrend. It confirms that the trend continues.
An uptrend example: price makes a high, pulls back to a low that is higher than the previous one, then moves up again and goes beyond the high. That move is a bullish BOS. The low that came before it becomes the level to watch.
The CHoCH: the first sign of change
A CHoCH (Change of Character) is the first break against the trend. In an uptrend, it is the break of the last low that led to a BOS. Price shows for the first time that it can make lower lows.
A CHoCH is not a confirmed reversal: it is a warning. What comes next will tell whether it is a correction or a real trend change. Many traders lose money by treating every CHoCH as an immediate entry signal.
Break on the close or on the wick?
This is the question that causes the most disagreement between two readings of the same chart.
- On the wick: price only needs to go beyond the level, even briefly.
- On the close: a candle has to close beyond the level.
A break on the close filters out many false breaks, at the cost of a slightly later confirmation. A break on the wick reacts faster but sees breaks where price only poked beyond a level before coming back. Pick one of the two and apply it everywhere: mixing both depending on what suits your analysis amounts to having no rule.
Liquidity: where the orders are
Above highs and below lows sit orders: the stops of traders positioned the other way, and the entry orders of those waiting for a break. This is what is called liquidity.
- Equal highs (EQH) and equal lows (EQL): two highs or two lows at the same level gather many stops just beyond them. In Smart Money reading, these are areas price tends to go after.
- BSL and SSL: buy-side liquidity, above the highs, and sell-side liquidity, below the lows.
- Liquidity sweep: price briefly goes beyond a high or a low, triggers the orders sitting there, then moves back the other way.
A liquidity sweep looks like a break on the wick. That is why the break rule (close or wick) matters so much: it decides whether you see a BOS or a sweep.
Internal and external structure
On the same timeframe, there are two levels of reading:
- the external structure, made of the major highs and lows, which gives the underlying trend;
- the internal structure, made of the small moves between those points, which shows what happens during a correction.
A CHoCH on the internal structure during a bullish correction does not carry the same weight as a CHoCH on the external structure. Mixing the two up is a common source of trades in the wrong direction.
Several timeframes
Structure depends on the timeframe. M15 can be bearish while H4 is bullish: M15 is then simply correcting.
A common practice is to read the direction on a higher timeframe (H4 or daily), then to look for entries on a lower one, in that direction. What matters is to decide in advance which timeframe sets the bias, and not to change it during a trade.
The most common mistakes
- Labelling every wiggle. By marking BOS and CHoCH everywhere, the chart stops saying anything. Fix the size of your highs and lows once and for all.
- Changing the rule depending on the chart. Close here, wick there: the reading becomes whatever you want it to be.
- Entering on every CHoCH. A CHoCH announces a possibility, not a certainty.
- Ignoring the higher timeframe. A bullish BOS on M5 in the middle of an H4 decline is rarely a good deal.
- Forgetting invalidation. Every reading must say at which level it becomes wrong. Without that level, there is no logical stop.
Automating the reading
Marking every high, every break and every liquidity area by hand on several assets takes time, and the rules slip with fatigue. The Smart Money Concept indicator applies fixed rules: BoS and CHoCH validated on the close or on the wick (your choice, once and for all), equal highs and lows, BSL and SSL liquidity, and a panel that sums up the structure and the bias of the higher timeframe. You keep the decision; the tool keeps the consistency.
The takeaway
Reading structure means applying a few simple definitions with constant rigour: a fixed size for highs and lows, a single break rule, one timeframe that sets the bias. The BOS says the trend continues, the CHoCH that it might change, liquidity where price may go looking for orders. The rest is discipline.