Reference
Order Block
An order block is the last opposing candle before an impulsive move that breaks market structure — the final down candle before a rally that breaks a high, or the final up candle before a decline that breaks a low — marked as a zone because price frequently returns to it before continuing.
Last updated 2026-08-25
Key facts
- An order block is the LAST opposing candle before the impulse, not any candle that price later reacts to.
- The move away from it has to break structure. Without a break of structure it is an ordinary pullback candle, not an order block.
- A bullish order block is the last down candle before an up-move; a bearish order block is the last up candle before a down-move.
- The zone is conventionally drawn from the candle's open to its low (bullish) or open to its high (bearish), though many traders use the full high-to-low range instead. Both conventions are in common use and neither is authoritative.
- An order block is considered invalidated once price closes decisively through it in the opposing direction, rather than merely wicking past it.
- Order blocks are not a signal on their own. Their reliability depends almost entirely on whether they sit in the direction of the higher-timeframe draw on liquidity.
- The term originates in ICT teaching and was adopted by the broader Smart Money Concepts vocabulary; usage is not standardised between them.
What makes a candle an order block
Three conditions, and all three have to hold. The candle must be the last one opposing the move that follows it. The move that follows must be impulsive — a decisive expansion, not a drift. And that move must break structure, taking out a prior swing point rather than stopping short of it.
Drop any one of those and you have marked something else. The most common error by a wide margin is marking a down candle that price happened to bounce from later; that is a reaction, identified after the fact, and it is the reason so many traders find that order blocks “work” in review and not live.
Why price returns to it at all
The mechanical explanation is that an impulsive move leaving a level behind implies orders were filled there that could not all be filled at once, and that unfilled interest remains. The honest position is that this is an inference about intent, not an observation: nobody watching a retail chart can see resting institutional orders, and the pattern is identified only after the impulse has already happened.
What can be tested is the behaviour rather than the explanation — how often price returns to the zone, how far it penetrates before continuing, and what proportion of the time it simply carries on through. Those are measurable on your own instrument and timeframe, and they are the numbers that decide whether the concept earns a place in your plan.
Order block, breaker and mitigation block
These three get used interchangeably and are not the same thing. An order block is the last opposing candle before a structure break. A breaker block is an order block that failed — price traded through it, then structure broke the other way, and the failed zone is now used as resistance instead of support (or vice versa). A mitigation block is a zone price returns to in order to fill positions left underwater from an earlier move, without the failure that defines a breaker.
The practical consequence: a breaker is traded in the opposite direction to the order block it used to be. Confusing them means taking the right level in the wrong direction, which is worse than not marking it at all.
How to test whether order blocks work for you
The concept is specific enough to be falsifiable, which puts it ahead of most of the vocabulary. Write the three conditions above as rules a stranger could apply, pick one instrument and one timeframe, and mark every qualifying block across a defined period — including the ones that failed, which is the step that gets quietly skipped.
Then measure three things: how often price returned to the zone at all, how often the return produced a move worth trading, and what the outcome looked like when the block sat against the higher-timeframe direction. A sample of thirty tells you almost nothing; a hundred starts to be informative. Bar-by-bar replay is the only practical way to collect that without waiting a year for the setups to appear.
Questions
How do I mark an order block correctly?
Find the impulsive move that broke structure, then step back to the last candle that opposed it — the final down candle before an up-move, or the final up candle before a down-move. Draw the zone from that candle's open to its low for a bullish block, or open to its high for a bearish one. Many traders use the full high-to-low range instead; both conventions are in common use, so pick one and apply it consistently rather than switching to whichever fits the outcome.
What is the difference between an order block and supply and demand?
They describe overlapping areas of a chart with different reasoning. Supply and demand zones are drawn from a base of consolidation before an impulsive move. An order block is a single specific candle — the last opposing one — and requires the move afterwards to break structure. Order blocks are narrower and have a stricter definition; supply and demand is broader and older.
What invalidates an order block?
A decisive close through the zone in the opposing direction. A wick through it is not invalidation — price frequently trades slightly beyond a block before reversing, and treating every wick as a failure removes most of the valid setups. Some traders additionally treat a block as spent once price has returned to it and reacted, on the basis that whatever was resting there has now been filled.
Do order blocks actually work?
That is not answerable in general, and anyone who answers it in general is selling something. It depends on the instrument, the timeframe, whether the block aligns with the higher-timeframe draw, and how strictly the three conditions are applied. It is testable, though: mark every qualifying block over a defined period, including the failures, and read the result. That is a very different exercise from finding examples that worked.
Which timeframe should I mark order blocks on?
Whichever one you actually trade, with the direction taken from a higher one. The common approach is to establish the draw on liquidity on the 4-hour or daily, then mark blocks on the 15-minute or 5-minute in that direction only. A block on a low timeframe pointing against the higher-timeframe direction is the single most reliable way to lose money with this concept.