What is an order block?
An order block is defined by the last opposing candle before an impulsive move that breaks structure. A bearish order block is the last bullish candle before a strong move down. A bullish order block is the last bearish candle before a strong move up.
The idea: that last opposing candle is where institutions absorbed retail orders before reversing the market. The wick and body of that candle mark a zone where unfilled orders likely remain. When price returns to it, those orders defend the level.
How to qualify a valid order block
- The candle is the last opposing candle before the impulsive move.
- The impulse creates a clear break of structure (BoS) or market structure shift (MSS).
- The impulse leaves a Fair Value Gap — confirms displacement, not chop.
- The block sits at a meaningful level: previous day high/low, equal highs, premium/discount edge.
Without displacement (no FVG, no BoS), the candle is just a swing — not an order block.
How to trade an order block
- Identify the impulsive move and the last opposing candle that preceded it.
- Mark the high and low of that candle (some traders use just the body — both work, test which fits your sizing).
- Wait for price to return. Enter on first touch with a limit order.
- Stop loss beyond the far edge of the block.
- Target: opposite liquidity pool or the FVG created by the original impulse.
Order block trading rules — bullish vs bearish
The two sides are mirror images. Only the direction of the displacement leg changes.
| Bullish order block | Bearish order block | |
|---|---|---|
| The candle | Last down candle before a strong move up | Last up candle before a strong move down |
| Required displacement | Move up breaks structure and leaves an FVG | Move down breaks structure and leaves an FVG |
| Best location | Discount half of the range, after a low is swept | Premium half of the range, after a high is swept |
| Entry | Limit at the top of the block, or its 50% level | Limit at the bottom of the block, or its 50% level |
| Stop | A few ticks below the block low | A few ticks above the block high |
| First target | The FVG left by the impulse, then the opposing high | The FVG left by the impulse, then the opposing low |
| Invalidation | A body close below the block | A body close above the block |
An order block trading model on NQ, step by step
Order block trading works best as the entry leg of a full sequence rather than as a level traded in isolation. The workflow most NQ traders settle on:
- Mark the previous day high and low, plus the overnight high and low, before the open.
- Wait for the New York AM Killzone and a liquidity sweep of one of those levels.
- Wait for a market structure shift against the sweep on the 1m or 5m.
- Mark the last opposing candle inside that shift leg — that is your order block.
- Place a limit at the block, stop past its far edge, first target the opposite side of the session range.
- If price closes clean through the block instead of respecting it, stand down and watch for the breaker block retest in the other direction.
Sizing follows the stop, not the other way round: the distance from your limit to the far edge of the block is the risk, and the setup is only worth taking when the first target pays at least twice that.
Order block, breaker block or mitigation block?
These three get used interchangeably and they are not the same thing. The difference is what price did to the block after it formed.
| Order block | Breaker block | Mitigation block | |
|---|---|---|---|
| State of the block | Untouched since it formed | Traded through, then reclaimed | Left behind by a losing position |
| What it signals | Continuation of the impulse | Reversal in the new direction | A move back to break-even, then continuation |
| Typical location | Inside a displacement leg | At the origin of a swept high or low | At the origin of a failed push |
| Confirmation needed | Displacement plus an FVG | A close back through the block | A clear failed leg before it |
Full guides: breaker block and mitigation block.
Order block vs supply and demand zone
A supply or demand zone is drawn around any area where price previously turned. An order block is stricter: it is one specific candle, it must be the last opposing candle before the move, and the move must displace — break structure and leave an imbalance behind. That extra requirement is what keeps the zone count low enough to actually trade, and it is why an order block gives a tight stop where a supply zone often does not.
Order block + FVG = highest probability
The strongest setup pairs an order block with the FVG sitting just above (bullish) or below (bearish). Price often reaches into the FVG, taps the order block, and reverses. Entering on the order block with the FVG as the secondary target gives a clean stop and a high-R trade.
Practice order blocks
Open NQ Replay on a Killzone session, identify the day's impulsive move, mark the last opposing candle before it, and step forward to see whether price returns and defends. Twenty sessions of reps will teach you which order blocks hold and which don't — the difference is almost always whether displacement was clean.
Frequently asked questions
What is an order block in trading?
An order block is the last opposing candle before an impulsive move that breaks structure. It marks a zone where institutional orders are likely to defend price when it returns.
Bullish vs bearish order block?
A bullish order block is the last bearish candle before a strong move up. A bearish order block is the last bullish candle before a strong move down.
How do I confirm an order block is valid?
The impulsive move that followed must break structure and ideally leave a Fair Value Gap behind. Without that displacement, the candle is just a swing — not a true order block.
Order block or Fair Value Gap — which to enter on?
They work best together. The strongest setup has price tap the order block and react inside the adjacent FVG. Enter at the order block; the FVG is the next target.
What is the best order block trading strategy?
Trade the block as the entry leg of a sequence rather than on its own: sweep of an obvious level, market structure shift against the sweep, then a limit at the last opposing candle inside the shift leg, stop past its far edge, first target the opposite side of the range.
How do I trade order blocks on NQ?
Mark the previous day and overnight high and low before the open, wait for the New York AM Killzone to sweep one of them, take the market structure shift, and enter on the order block inside that shift leg. Rehearsing it on replayed 1-minute NQ sessions is the fastest way to learn which blocks hold.
Order block vs supply and demand zone — what is the difference?
A supply or demand zone is any area where price previously turned. An order block is one specific candle — the last opposing candle before a move that breaks structure and leaves an imbalance. The stricter definition means fewer levels and a tighter stop.
What timeframe is best for order block trading?
Bias comes from the 4-hour and daily, the structure shift is read on the 5-minute, and the block itself is refined on the 1-minute. Blocks marked on very low timeframes without higher-timeframe context are the most common source of losing retests.
Related concepts
- Market Structure
Swing highs and lows, trend states, and how BoS and MSS read inside them.
- Break of Structure (BoS)
The continuation signal — a close through the prior swing in trend.
- Market Structure Shift (MSS)
The reversal confirmation that follows a clean liquidity sweep.
- Breaker Block
An order block price traded through and reclaimed — it flips direction.
Data & methodology
All NQ and MNQ examples use Databento GLBX.MDP3 1-minute OHLCV candles for continuous front-month E-mini Nasdaq-100 futures, aggregated to higher timeframes (5m, 15m, 1h, 4h) so every bar agrees across timeframes. Sessions run 01:00–16:00 ET. ICT overlays are drawn algorithmically from the same price data used in the replay trainer.