Short answer
An order block is the last opposing candle before a strong displacement move — the final down-close candle before an impulse up, or the final up-close candle before an impulse down. Traders mark that candle as a zone and look for price to return to it before continuing in the direction of the displacement.
How to mark an order block correctly
Find the displacement first, then look left. The order block is the last candle that closed against the impulse. Mark the zone from that candle's open or close to its wick extreme — body to wick, not the whole range of several candles. A block you have to stretch to make work is not a block.
- — Identify a displacement leg: consecutive strong closes that leave an imbalance behind.
- — Walk back to the last candle closing in the opposite direction.
- — Mark body to wick extreme. That is your zone.
- — Note whether the leg broke structure. Blocks that cause a break of structure are the ones worth trading.
Bullish order blocks
A bullish order block is the last down-close candle before an up impulse. It usually sits at the low of a sweep, which is what gives the impulse its fuel. On the retracement you look for a long from the block with the stop below its wick.
Bearish order blocks
A bearish order block is the last up-close candle before a down impulse, typically at the high of a sweep. On the retracement up into it you look for a short with the stop above its wick.
Valid vs invalid order blocks
| Test | Valid | Invalid |
|---|---|---|
| Displacement | Strong consecutive closes away from the block | Slow, overlapping candles |
| Imbalance | Leaves a fair value gap behind | No gap left behind |
| Structure | The leg breaks or shifts structure | Price stays inside the range |
| Liquidity | Block sits at a swept high or low | Block sits mid-range with nothing taken |
| Touches | First return to the zone | Third or fourth return |
| Context | Aligned with the higher-timeframe draw | Counter to the draw on liquidity |
Worked NQ example — bullish order block
- — 09:33 — NQ sweeps the Asia session low, printing a final 1-minute down-close candle.
- — 09:35–09:41 — six strong up closes leave a fair value gap and shift structure.
- — The order block is that 09:33 candle, marked body to low.
- — 10:02 — price retraces into the block and holds. Long at the block open, stop under its low.
- — Target the previous day high. Result: about 4R with a 12-point stop.
Worked NQ example — bearish order block that failed
- — 11:20 — a bearish block forms mid-range, with no liquidity swept above it.
- — 11:44 — price trades into the block and pushes straight through it.
- — The block failed the liquidity and structure tests before entry. It was skippable, not unlucky.
Where order blocks fail
- — Mid-range blocks with no swept liquidity behind them.
- — Blocks marked from an entire multi-candle range so the stop swallows the reward.
- — Blocks traded on the fourth touch, when the orders inside are already filled.
- — Blocks traded during lunch chop (12:00–13:30 ET) instead of a killzone.
Order blocks vs fair value gaps
They usually appear together: the displacement that validates an order block is the same move that leaves a fair value gap. When the block and the gap overlap, that overlap zone is where entries perform best. When they are far apart, trust the one that sits closer to swept liquidity.
How to build a real sample
Pick one variation — bullish blocks in the NY AM killzone, for example — and take twenty logged reps in replay before judging it. Step bar-by-bar rather than fast-forwarding, and set the stop and target before revealing the next candle so the sample stays honest.