What is BOS (Break of Structure)?

A Break of Structure (BOS) occurs when price breaks beyond the most recent significant swing point in the direction of the existing trend. In an uptrend, a bullish BOS is price breaking above the previous swing high - confirming the uptrend continues. In a downtrend, a bearish BOS is price breaking below the previous swing low. BOS is a trend-continuation signal: it tells you the current direction is still intact and momentum favours the side that just broke. To read it correctly you first have to mark valid swing highs and lows, then watch which one gives way. The key detail traders miss is that a BOS must break a structurally meaningful swing, not just any minor wiggle - otherwise you are reacting to noise. A clean BOS also leaves behind fresh order blocks and imbalances on the pullback, which is exactly where continuation entries tend to form.

What is CHoCH (Change of Character)?

A Change of Character (CHoCH) is the first break AGAINST the prevailing trend - the earliest sign of a potential reversal. In an uptrend (higher highs and higher lows), a CHoCH is the first time price breaks below a higher low. In a downtrend, it's the first break above a lower high. CHoCH signals that the trend's character is shifting and a reversal may be starting, because the market has failed to make its next expected higher high or lower low and has instead taken out structure on the opposite side. It's an earlier, riskier signal than BOS: it catches turns sooner but produces more false alarms, since a single break can be a deep pullback rather than a true reversal. Treat CHoCH as an alert to shift your bias and tighten focus, not as a standalone entry trigger - you still want confirmation before committing.

What is the difference between BOS and CHoCH?

BOS confirms trend continuation (price breaks structure IN the trend direction). CHoCH signals a potential reversal (price breaks structure AGAINST the trend for the first time). Simple rule: BOS = trend continues, CHoCH = trend may be flipping. The two are really two readings of the same event - a break of a swing point - separated only by which direction the trend was already going. A CHoCH often precedes a new series of BOS in the opposite direction once the reversal confirms: the first counter-trend break is the CHoCH, and every break that follows in the new direction is a BOS again. In practice you use them together on one chart. When your higher-timeframe bias is bullish, you trust bullish BOS for continuation and treat a bearish CHoCH as a warning to stand aside or reassess, rather than as an instant signal to flip your entire position.

How do you trade BOS and CHoCH?

BOS: trade continuation - after a bullish BOS, look for longs on the retracement into an order block or fair value gap left behind by the impulse that made the break. Enter on the pullback, not on the break itself, so you get a defined stop below structure and a better reward-to-risk. CHoCH: trade the early reversal - after a CHoCH, wait for confirmation (often a follow-up BOS in the new direction) before entering, since CHoCH alone can be a false signal. A common sequence is a liquidity sweep, then the CHoCH, then a retest of the origin zone where you take the position. Both approaches work best combined with liquidity sweeps and a clear higher-timeframe bias: use the higher timeframe to pick direction, then drop down to execute your BOS or CHoCH entry with tighter risk.

Is CHoCH a reliable reversal signal?

On its own, no - CHoCH is an early warning, not a confirmation. Many CHoCHs fail and the trend resumes, especially in strong, one-directional markets where every counter-move is just a pullback that gets bought or sold back into the trend. The higher-probability approach is to wait for a CHoCH PLUS confirmation: a liquidity sweep before the CHoCH, a follow-up break of structure in the new direction, or an order block forming at the reversal. Context matters too - a CHoCH after price has swept a major high or low into a higher-timeframe level is far more trustworthy than one printed mid-range. CHoCH points you to watch; confirmation gets you in. Journal your CHoCH trades to find which confirmation filters actually improve your win rate, because the filters that work will differ by market, session, and volatility.

ICT Concept · 6 min read · 2026

BOS vs CHoCH explained.

BOS (Break of Structure) and CHoCH (Change of Character) are the two ways traders read market structure in ICT/Smart Money Concepts. The simple rule: BOS = the trend continues; CHoCH = the trend may be reversing. Together they give you a framework for knowing whether to trade with the current direction or prepare for a flip.

In one sentence: BOS breaks structure IN the trend direction (continuation); CHoCH is the first break AGAINST the trend (early reversal warning).

First: what is market structure?

Market structure is the sequence of swing highs and swing lows. An uptrend = higher highs (HH) and higher lows (HL). A downtrend = lower highs (LH) and lower lows (LL). BOS and CHoCH describe what happens when price breaks one of these swing points — and which direction it breaks tells you whether the trend continues or shifts.

BOS — Break of Structure (continuation)

A BOS happens when price breaks the most recent significant swing in the direction of the existing trend:

Bullish BOS

In an uptrend, price breaks above the previous swing high. Confirms higher-highs continue → uptrend intact. Look for longs.

Bearish BOS

In a downtrend, price breaks below the previous swing low. Confirms lower-lows continue → downtrend intact. Look for shorts.

CHoCH — Change of Character (reversal warning)

A CHoCH is the first break against the prevailing trend — the earliest structural sign of a potential reversal:

Bearish CHoCH

In an uptrend, the first time price breaks below a higher low. The uptrend's character has changed — a reversal down may be starting.

Bullish CHoCH

In a downtrend, the first time price breaks above a lower high. The downtrend's character has changed — a reversal up may be starting.

CHoCH is earlier and riskier than BOS. It's a warning, not a confirmation. Many CHoCHs fail and the trend resumes — which is why you confirm before trading them.

How to trade BOS and CHoCH

BOS (continuation): after a bullish BOS, look for longs on the retracement into an order block or fair value gap left by the move.
CHoCH (reversal): don't enter on the CHoCH alone. Wait for confirmation — often a follow-up BOS in the new direction, or a CHoCH that came right after a liquidity sweep.
Combine with HTF bias: a CHoCH on the lower timeframe that aligns with higher-timeframe structure is far more reliable than a counter-HTF CHoCH.
Risk: stop beyond the structural point that, if broken, would invalidate your read. Target the next liquidity level. Aim 1:2+ R-multiple.

The classic reversal sequence

Here's how BOS, CHoCH, and a liquidity sweep chain into one high-probability reversal (bullish example):

Downtrend in progress (lower highs, lower lows, series of bearish BOS).
Price sweeps sell-side liquidity below the last low (stop-hunt).
Bullish CHoCH: price breaks above the last lower high — character change.
Price retraces into the order block / FVG left by the CHoCH move.
Entry long at the order block, stop below the sweep low.
A follow-up bullish BOS confirms the new uptrend — you're already in.

Common mistakes

Trading CHoCH without confirmation. CHoCH alone fails often. Wait for a follow-up BOS or a preceding liquidity sweep before committing.
Using wicks instead of closes / body breaks. Decide whether you count a break on a wick or a candle close — and be consistent. Inconsistent structure-reading produces inconsistent results.
Reading structure on one timeframe only. A lower-timeframe CHoCH against the higher-timeframe trend is usually just a retracement, not a reversal.
Confusing BOS and CHoCH. Remember: BOS is WITH the trend (continuation), CHoCH is AGAINST it (first reversal sign). Mislabeling them inverts your entire read.

FAQ

Is CHoCH the same as a trend reversal?

Not quite — CHoCH is the first sign of a possible reversal, not the reversal itself. It only tells you the market has, for the first time, broken structure against the prevailing trend — failed to make its next higher high or lower low and instead taken out the opposite side. That single break can just as easily be a deep pullback that the trend later reclaims. A confirmed reversal usually requires the CHoCH plus a follow-up break of structure in the new direction, ideally preceded by a liquidity sweep of the prior high or low. In strong trends most CHoCHs fail, so treating every one as a done-deal reversal is a fast way to fight the trend and get stopped out. CHoCH points you to watch and to flip your bias to neutral; confirmation gets you in with defined risk.

Do I use candle closes or wicks to mark a break?

Both methods exist and neither is objectively correct. Body/close breaks are more conservative: you only count a swing as broken once a candle closes beyond it, which filters out a lot of fakeouts but gets you in later and with a wider stop. Wick breaks are more sensitive: any penetration of the level counts, so you catch moves earlier but also react to far more noise and liquidity grabs that immediately reverse. The trap is switching between the two depending on whether the current chart would have worked — that is hindsight, not a rule. Pick one definition, apply it to every swing high and low the same way, and stay consistent for a meaningful sample. Then journal which gives better expectancy for your specific market and timeframe, since a fast index future and a slower FX pair often reward opposite choices.

How does this fit with the rest of ICT?

BOS/CHoCH is the market-structure layer of ICT / Smart Money Concepts, and it is meant to be read alongside the other pieces rather than in isolation. Structure tells you direction: whether the trend is continuing (BOS) or possibly turning (CHoCH). Liquidity sweeps tell you timing — the point where price grabs stops before reversing, which often occurs right before a CHoCH. Order blocks and FVGs give you entry zones on the pullback, with a logical place to hide your stop. The usual workflow is top-down: set higher-timeframe bias from structure, wait for a sweep of obvious liquidity, then use a BOS or CHoCH to confirm and an order block or gap to execute. Read alone, structure will chop you up; read as one layer inside that sequence, it becomes the backbone that ties direction, timing and entry together into a complete, repeatable setup instead of a single indicator.

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Related concepts: What is ICT Trading · Smart Money Concepts · Order Block · Liquidity Sweep · Glossary

Disclaimer: Educational content. Not financial advice. Trading carries substantial risk. BOS and CHoCH are concepts from ICT/Smart Money Concepts; no methodology guarantees profitable results.