An order block is the last opposing candle before an impulsive, one-directional move — the visible footprint of where institutions loaded their positions. A bullish order block is the last down candle before a strong rally; a bearish order block is the last up candle before a sharp sell-off. Because that candle marks unfinished institutional business, price frequently returns to it before continuing.
What makes an order block valid
Not every candle before a move is a tradeable order block. Three conditions separate a real block from noise:
- Displacement. The move away from the block must be impulsive — ideally leaving a fair value gap behind it. Weak, overlapping candles do not qualify.
- A liquidity grab. The strongest blocks form right after a liquidity sweep — price raids a high or low, then the block forms.
- Freshness. The first return to a block carries the highest probability. Each subsequent tap consumes more of the resting orders and weakens the zone.
Mitigation: how price uses an order block
When price returns to an order block, it is said to mitigate it — the institutions that were trapped or partially filled use the retracement to complete their positioning. As a trader you are not guessing; you are waiting for price to come to a pre-defined zone and react. Entries are cleaner, stops are tighter, and the reward-to-risk is defined before you click.
Common order-block mistakes
- Marking every candle as a block instead of only the last one before displacement.
- Trading blocks with no liquidity sweep or displacement — the two ingredients that give them an edge.
- Re-entering a block that has already been mitigated once.
- Ignoring the higher-timeframe bias: a bullish block against a strong bearish HTF trend is a low-quality setup.
Key takeaways
- An order block is the last opposing candle before an impulsive move.
- Valid blocks show displacement, follow a liquidity grab, and are fresh.
- The first mitigation is the highest-probability entry.
- Always read blocks in the context of higher-timeframe bias.