An order block is the last opposing candle before a strong, structure-breaking move - the down candle before a sharp rally, or the up candle before a sharp drop. The premise is that large orders were placed there, so price returning to that candle often reacts. It is a precise, single-candle version of a supply or demand zone.
Bullish and bearish order blocks
- Bullish order block: the last down (bearish) candle before an explosive move up. You look to buy when price returns to its range.
- Bearish order block: the last up (bullish) candle before an explosive move down. You look to sell on the return.
The candle itself is not magic - it marks the origin of an imbalance, the spot the move launched from. That is why order blocks appear inside the broader smart money framework as the entry zone after a shift in structure.
What makes an order block valid
Not every candle before a move qualifies. The stronger blocks share features:
- The departure move breaks structure - it is not just a normal swing.
- It often sweeps liquidity - taking out a prior high or low - just before reversing.
- The move away leaves an imbalance or fair value gap, a sign of one-sided pressure.
- It is the block's first return; later touches are weaker.
How to trade the return
Once price comes back to the block, you enter in the direction of the original move - either a limit order at the block's edge for a better price, or a confirmation candle for fewer bad fills. The stop sits just beyond the far side of the block, which is often tight, giving these trades their attractive reward-to-risk. The trade-off is that tight stops get wicked out more often, so the win rate can be lower than the clean examples suggest.
Important: because "the last opposing candle" is easy to cherry-pick in hindsight, order blocks are a magnet for self-deception. Fix your validity rules in writing first, then judge the method only on trades you took without seeing the future.
Test them with the future hidden
The honest test is a bar-by-bar replay: mark the order block as it forms, before you know whether price will return and react. In a simulator the outcome stays hidden until you step forward, so you take every valid return your rules define and let expectancy over 100+ trades settle whether order blocks earn their reputation - or just look good on Twitter.
Order blocks FAQ
What is an order block?
The last opposing candle before a strong, structure-breaking move - a precise, single-candle version of a supply or demand zone where price often reacts on return.
What makes one valid?
The strongest precede a structure break, often sweep liquidity first, leave an imbalance, and are traded on their first return. Definitions vary, so fix yours before testing.
How do I trade one?
Enter on the return in the move's direction, with a stop just beyond the block's far side, and prove the approach with a hidden-future backtest first.