Order blocks: the last candle before the move

The last candle before the move

An order block is the last candle of the opposite colour before a strong move that broke structure: the last red candle before a break up, or the last green candle before a break down. Its range — high to low — becomes a zone. The SMC story is that large traders placed orders in that candle, some of them unfilled, and price returning there will meet them again.

The terminal looks for it like this:

1. A break of structure or a change of character.
2. The last opposite-coloured candle within the 15 candles before the break.
3. Kept only if the move out of it was an impulse: a candle with a body of at least 1.5 ATR in the break's direction, or a fair value gap.

After that the zone is fresh until price comes back into it, tested once it has, and broken — removed — when a candle closes beyond its far edge.

Order block — two real bullish order blocks of BTC on 4-hour candles in August 2026. The red candle at 00:00 UTC on 18 August (64,048–64,568) came before a ChoCH up above 64,500; price dipped just into it at 20:00 UTC, no candle closed below it, and by 16:00 UTC on 19 August BTC traded at 68,997. The red candle at 16:00 UTC on 24 August (78,469–79,878) came before a BOS up above 79,500; the next candle traded back into it, and at 12:00 UTC on 26 August a candle closed at 78,012, below the zone.

Do order blocks hold?

To check, take every order block the rule finds, wait for the first return into the zone, and call it held if no candle closes beyond the far edge in the next 12 candles. Compare with the ranges of any candle of the same colour that price left and later came back to.

Check the claim — order blocks held on their first return in 24 of 49 cases on BTC/USDT 4-hour candles (49%), against 46% for any candle's range; 41 of 96 on hourly candles (43%, against 46%); 8 of 25 on daily candles (32%, against 43%).

The order blocks did not hold more often than the range of any comparable candle. Being "the last candle before the move" did not make a zone stronger in this data.

Check yourself · 1 of 3Before a break up, which candle is the order block?

AThe last red candle before the move upBThe first green candle of the moveCThe candle with the highest volume

Show the answer

For a break up, the order block is the last opposite-coloured — red — candle before the impulse.

Check yourself · 2 of 3When does the terminal drop an order block?

AWhen price touches itBWhen a candle closes beyond its far edgeCAfter 15 candles

Show the answer

Touching makes it "tested". A close through the far edge makes it broken.

Check yourself · 3 of 3On BTC's 4-hour chart, how often did an order block hold on its first return?

A90% of the timeB49% — about as often as any candle's rangeCNever

Show the answer

24 of 49 held, against 46% for comparable candles.

Takeaways

1. Order block: the last opposite candle before an impulse that broke structure; its range is the zone.
2. Fresh until revisited, tested once revisited, broken by a close beyond the far edge.
3. On BTC's charts, order blocks held no more often than any candle's range.
4. Treat one as a zone to watch, not as a price that must hold.

Open BTC in the terminal — order blocks are under the layer-group button above the chart

Further reading

• Kline (candle) data, where this lesson's candles come from — Binance Spot API docs ↗