Market Structure: BOS & CHoCH
⚡ Read this before you open your next trade
Market structure is the backbone of Smart Money Concepts trading. It describes how price forms higher highs and higher lows in an uptrend, or lower highs and lower lows in a downtrend. Two critical events define structural shifts: Break of Structure (BOS), which confirms trend continuation, and Change of Character (CHoCH), which signals a potential trend reversal. Mastering these concepts allows traders to objectively determine trend direction, identify optimal entry points, and avoid trading against the prevailing institutional flow.
Understanding Break of Structure (BOS)
A Break of Structure occurs when price surpasses a previous swing point in the direction of the existing trend. In an uptrend, BOS happens when price breaks above the most recent swing high — this confirms that buyers are still in control and the uptrend continues. In a downtrend, BOS occurs when price breaks below the most recent swing low. Each BOS creates a new reference point for market structure and helps traders identify the trend with objectivity, eliminating guesswork about whether the trend is intact.
Recognizing Change of Character (CHoCH)
A Change of Character is the first structural break against the prevailing trend — it signals a potential reversal. In an uptrend, CHoCH occurs when price breaks below the most recent swing low instead of making a higher low. In a downtrend, CHoCH happens when price breaks above the most recent swing high. This shift indicates that the opposing side has gained control. CHoCH is not a guaranteed reversal — it is an early warning signal that should be confirmed by subsequent price action, such as a new BOS in the opposite direction.
Applying BOS and CHoCH in Trading
After a BOS, look for pullbacks to order blocks or FVGs formed during the impulse move for trend-continuation entries. After a CHoCH, wait for the first pullback in the new direction to enter the emerging trend. Always use multi-timeframe analysis — identify BOS and CHoCH on the higher timeframe for directional bias, then use lower-timeframe structure for precise entries. Mark swing points clearly on your chart and update them as new structural breaks occur. This systematic approach removes emotion from trading decisions and provides clear entry and exit criteria.
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Frequently Asked Questions
What is the difference between BOS and CHoCH?
BOS confirms the existing trend direction — it is a structural break in line with the current trend. CHoCH is a structural break against the current trend, signaling a potential reversal. Think of BOS as "trend continues" and CHoCH as "trend may be changing." Both require a swing point to be broken by a candle body close, not just a wick.
Should I trade every BOS or CHoCH I see?
No. Not every structural break leads to a tradeable setup. Look for BOS and CHoCH that are supported by additional confluence — order blocks, FVGs, liquidity sweeps, or key support and resistance levels. Also ensure the structural shift aligns with the higher-timeframe direction for higher-probability trades.
Does a wick through a swing point count as BOS?
Most SMC traders require a candle body close beyond the swing point for a valid BOS or CHoCH — a wick alone is often considered a liquidity sweep rather than a structural break. However, some aggressive traders take wick breaks as early signals. Consistency in your rules is more important than which method you choose.
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About the author
Kacper MrukXAUUSD & ETHUSD Trader | Macro + options data | Think, don't follow
Creator of Take Profit Trader's App. Specializes in XAUUSD and ETHUSD, combining macro analysis with options data. He teaches not how to trade, but how to think in the market. Actively trading since 2020.
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