Order block

Find a move that went a long way in a short time. Walk back to the last candle that closed in the opposite direction before it started. Draw a box around that candle. That box is an order block, under the most widely used definition — and the reason this page spends most of its length on definitions is that "the most widely used" is doing a great deal of work in that sentence.

The name carries a claim inside it. "Order block" implies a block of resting orders, which implies knowledge of what is sitting in the book. A retail candle chart contains executions and nothing else: no resting orders, no participant identity, no size behind any particular price. The box is a location on a chart. Whether anything is resting there is not something the chart can tell you.

  ...  2304.1  close 2302.8   down candle   <- last down close
  ...  2303.0  close 2318.6   up  candle    ) the move
  ...  2318.2  close 2329.4   up  candle    )

zone = the down candle's range: 2302.8 .. 2304.1
or its body only, or its open to its low — see below

Five decisions hiding in one box

Before an order block can be tested it has to be defined, and every one of the following is a live disagreement among people who all use the term confidently.

1. 1Which candle. The last opposing close, the last opposing candle by body, or a cluster of several.
2. 2Which part of it. The full high-to-low range, the body only, or the half between open and close.
3. 3How strong the move must be. Some require a market structure shift afterwards, some require a fair value gap in the move, some require neither.
4. 4When it stops counting. After one touch, after price closes through it, or after a fixed number of candles.
5. 5Whether untested matters. Many traders discard a zone once price has been into it; others do not distinguish.

Pick differently on any one of these and you get a different set of zones from the same chart. That is not a flaw in the concept so much as a fact about it, and it has a practical consequence: a result somebody else reports about order blocks tells you almost nothing about what your version will do.

Why the pattern is easy to fool yourself with

The definition starts from a large move that has already happened. That means every order block you can see was, by construction, followed by exactly the thing that makes it look significant. Open a chart, mark the obvious ones, and the hit rate looks remarkable — because the ones that were not followed by a large move were never marked in the first place.

What it is actually useful for

Stripped of the claim about resting orders, a zone drawn this way still does something genuinely useful: it gives you a specific, repeatable, written-down location instead of a vague one. "I entered because it looked like support" cannot be reviewed. "I entered at the body of the last down candle before the 09:42 expansion, stop below its low" can be reviewed, counted, and compared against every other time you did it.

That is most of the value of any pattern vocabulary, and it is available whether or not the underlying story about institutional orders is true. A rule you can state is a rule your journal can score. A feeling is not.

Testing yours

Write the five decisions above down as a playbook rule, so that each trade records which version it was taken under. Then let the record answer three questions: how often price returned to your zones at all, what happened when it did, and how the trades you took compare with the ones you passed on.

The third question is the one most traders skip and the one that usually explains the gap between a strategy's reputation and its results. If your rule produces forty zones a week and you trade three, the record is measuring your selection, not the zones. The guide to finding your edge goes through how to separate the two.

Expect the numbers to be slow to arrive. A pattern that triggers a few times a month needs many months before a difference in expectancy means anything, and the honest way to read a small sample is as an observation with its count attached rather than as a verdict.

Where traders disagree

This vocabulary is not standardised. These are the live disagreements — worth knowing about before comparing your results with anyone else’s.

• ?Whether the zone is the candle's full range, its body, or the open-to-close half — three rules that produce materially different entry prices and stop distances.
• ?Whether a valid order block requires a subsequent break of structure, an imbalance inside the move, or nothing at all.
• ?Whether a zone is invalidated by a single touch, by a close through it, or only by a close beyond its far edge.
• ?Whether the name describes anything real about resting orders, or is a story attached to an ordinary description of the last candle before a fast move.

Test it on your own trades

Whether this holds is a question about your record, not about the term. These are the steps that make the answer trustworthy.

1. 1Write your five decisions down before collecting a single data point, and tag every trade with the version it used.
2. 2Mark zones forward in replay, never backward on a finished chart, so the sample includes the ones that failed.
3. 3Count how often price returned to your zones at all — the return rate is a separate number from what happened on return, and conflating them hides which part is working.
4. 4Compare trades taken at a zone against your baseline expectancy in R, with both sample sizes shown.
5. 5Record the zones you identified and skipped. If those did better than the ones you took, the problem is selection rather than the pattern.

You will also need

• Fair value gap (FVG)A range of price left behind by three consecutive candles whose first and third wicks do not overlap — the market passed through it quickly and in one direction.
• Market structure shiftA reading of price as a sequence of swing highs and lows, where a break beyond the last swing either continues the sequence (BOS) or reverses it (CHoCH).
• Liquidity sweepPrice trading beyond an obvious swing high or low — often a level with equal highs or lows — and then returning back through it.