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Break of Structure: The Close That Never Came
Quick Answer
A break of structure (BOS) happens when price closes beyond a previous swing high or swing low in the direction of the existing trend, confirming the trend is continuing rather than reversing. A candle that merely wicks through the level and snaps back is not the same event, even though both technically touch the identical price.
My apprentice went through a breakup last year and spent a fortnight demanding closure (I heard about it daily, whether I asked or not). Turns out the market makes the same demand at every swing high — it is just fussier about what actually counts.
A break of structure is one of the more reassuring terms in this whole vocabulary, because unlike CHOCH or MSS it is not warning you the trend might be ending. It is telling you the trend you are already in just got confirmed. That reassurance is exactly why a fake one hurts more than most.
The continuation that reversed
Here is the specific version of this that catches people out. Price has been trending up, it breaks the previous swing high, the price action looks textbook, confluence checks out, you pull the trigger long expecting the trend to simply keep doing what it has been doing. Within a few candles price is back below the old high and falling. My analysis was right but I still lost, because the break itself was real — it just was not the kind of break that actually confirms anything.
None of this means the concept is unreliable. It means the version most people are taught, a level got touched, therefore the trend continues, skips the one detail that decides whether a BOS is real or not.
What a break of structure actually is
A break of structure happens when price closes beyond a previous swing high in an uptrend, or a previous swing low in a downtrend, in the direction the trend was already moving. A bullish BOS needs a higher low followed by a higher high; a bearish BOS needs a lower high followed by a lower low. Genuinely useful, genuinely definable — and, crucially, a continuation signal rather than a reversal one, which is what separates it from CHOCH and MSS covered elsewhere on this site.

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The wick question nobody agrees on
Does a wick through the level count as a BOS — sure, heard people argue both sides of this one, and I will not pretend there is a single, universally agreed answer across every course and forum. What I will say plainly: a candle that closes beyond the level is a fundamentally different event from one that pokes through on a wick and snaps straight back. Price technically reached the same level in both cases. Only one of them shows the market actually willing to hold above it.
Treating every wick as confirmation is how a correctly identified swing high turns into a stop hunted long, right on schedule, one candle after the “break” everyone got excited about.
Why a real close is the institutional tell
A Federal Reserve Bank of New York study of stop-loss orders in currency markets found exchange rates move fastest once price reaches a cluster of resting stops, precisely because that cluster supplies the liquidity a larger position needs to fill against. A wick beyond a swing high frequently is that liquidity grab: enough of a poke to clear the stops sitting just past the level, with nothing behind it once they are gone. A close beyond the level, especially one backed by real displacement and the kind of imbalance covered elsewhere on this site, is a far more honest signal that genuine flow, not just a swept order book, is behind the move.
This is the same principle already covered for breaker blocks and market structure shift, applied here to a continuation break instead of a reversal one. The entry was never the problem. Waiting for the close that actually confirms it is.

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BOS vs CHOCH vs MSS
All three terms are read off the same kind of event, a decisive break of a swing high or low, and the only real difference between them is direction and confirmation strength. A change of character (CHOCH) is the first break against the prevailing trend, an early and unconfirmed signal a reversal might be starting. A market structure shift (MSS) is that same reversal signal once it is backed by genuine displacement. A break of structure is the continuation version: the trend already in place getting confirmed rather than challenged. Learn one of these properly and the other two stop feeling like separate vocabulary and start feeling like the same rule, read in three different directions.
Who should leave this alone
I can find BOS explained for free on twenty different YouTube channels, why pay attention to one more version of it — fair challenge, and the honest answer is that most of those twenty explain what a BOS is without ever mentioning that a wick and a close are not the same event, which is precisely the gap most losing BOS trades fall into. If you still cannot reliably tell a genuine displacement candle from one that merely tagged the level, layering a BOS label on top of that uncertainty will not fix it. The FCA's review of retail CFD accounts found the large majority losing money before it capped retail leverage in 2018, and a technically correct BOS entered on undefined risk does nothing to change that arithmetic.
My apprentice eventually got his closure (his words, not mine), and stopped treating every wick as the market's way of agreeing with him. He still checks for the close before he checks for anything else, on charts and, mercifully, in most other areas of his life by now too.
Frequently asked questions
What is a break of structure (BOS) in trading?
A break of structure happens when price closes beyond a previous swing high (bullish BOS) or swing low (bearish BOS) in the direction of the existing trend, confirming the trend is continuing rather than reversing.
Does a wick through the level count as a break of structure?
Sources disagree on this, and that disagreement is the root of most false-BOS losses. A candle that closes beyond the level, backed by real displacement, is a far more reliable read than a single wick that pokes through and snaps back, even though both technically touch the same price.
How is a break of structure different from CHOCH?
A break of structure confirms the existing trend is continuing. A change of character (CHOCH) signals the opposite: the first break against the trend, suggesting it may be ending. Both are read off the same kind of swing-level break, just in opposite directions.
How is a break of structure different from MSS?
A break of structure and a market structure shift (MSS) both require a genuine, displacement-backed break of a swing level. The difference is direction: a BOS confirms the trend continuing, an MSS signals it may be reversing.
What is the best timeframe for trading a break of structure?
There is no single correct timeframe. A break on a higher timeframe carries more weight because it takes more genuine participation to produce, while a break on a lower timeframe is faster to spot but far easier to fake with a single aggressive candle.
Can a break of structure fail?
Yes, regularly. A BOS that lacks real displacement, or one that immediately gets swept back through the level, is not a genuine continuation signal — it is usually a liquidity grab that briefly cleared stops beyond the level before the market did something else entirely.
Marco Stavros has traded forex from London since 2009. He has entered on a wick that never turned into a close more times than he cares to admit, and now waits for the candle to actually finish before he trusts what it is telling him. Learn more about Marco.
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