What it means
A break of structure is a candle close beyond the most recent swing point in the direction of the current trend: above the last swing high in an uptrend, below the last swing low in a downtrend.
It shows the trend made a new extreme and is continuing. Some tools call it a market structure break (MSB).
Why traders use it
A BOS confirms continuation. Traders use it to keep the trend label current and to find the next pullback area: the swing that started the breaking move.
It also marks where stop orders above (or below) the old swing were likely triggered, which can explain fast moves through the level.
Chart examples
Bullish break of structure
Bearish break of structure
Wick only: no BOS
How to identify it objectively
- 1Identify the trend and the most recent confirmed swing in its direction.
- 2Wait for a candle to close beyond that swing. A wick beyond it is not a BOS.
- 3Optional: require the breaking candle's body to be at least 1× ATR, so tiny closes do not count.
- 4Once confirmed, the swing that started the move becomes the new protected low (or high).
Bullish use
- 1Uptrend with a confirmed swing high.
- 2A candle closes above that high: bullish BOS.
- 3The higher low before the break becomes the level to defend; pullbacks toward it are watched.
Bearish use
- 1Downtrend with a confirmed swing low.
- 2A candle closes below that low: bearish BOS.
- 3The lower high before the break becomes the level to defend.
What confirms it
- A close beyond the swing, not only a wick.
- A strong body relative to recent candles.
- Follow-through: the next candles hold beyond the level.
What invalidates it
- Price closes back inside the old swing within a few candles: possible failed break.
- Only a wick crossed the level.
- The protected low (or high) is lost afterwards.
How a hypothetical setup is built
Entry
After a bullish BOS, wait for a pullback toward the order block or fair value gap left by the breaking move, then enter on a bullish close.
Stop
Below the higher low that produced the BOS.
Target
The next liquidity level above, or a measured multiple of the risk.
A hypothetical illustration of how the concept is turned into a plan, not a recommendation. Practise it on a paper account first.
Related concepts
- Market StructureChange of Character (CHoCH)
- Market StructureMarket Structure Shift (MSS)
- Market StructureProtected and Weak Highs and Lows
Historical testing
No BOS backtest has been published on The Tradeskill yet. If you test it, record separately the results with and without the ATR body filter, and include breaks that failed within three candles, since those are the cases this rule is designed to filter.
Limitations: when it fails
- A BOS on a low timeframe can be a minor wiggle inside a higher-timeframe range.
- Late entries after a BOS often chase extended moves.
- In strong news-driven moves, pullbacks may never come.
- Definitions differ between educators: some accept wick breaks, this lesson does not.
Knowledge check
Pick an answer to see the explanation. Nothing is saved.