What it means
An order block is the last bearish (down) candle before a strong upward move, or the last bullish (up) candle before a strong downward move. SMC/ICT theory treats these candles as the price zones where institutional 'smart money' executed accumulation or distribution. When price returns to the order block, the theory predicts a reaction (rejection) as remaining institutional orders fill. One of the foundational SMC concepts.
Why it matters
Order blocks formalize what older technical analysis called 'breakout pivots' or 'last point of resistance.' The framing is institutional flow, not retail pattern recognition: where did the big money buy/sell, and will they defend that zone on retest? Useful framework — but reliability depends on disciplined identification, not loose visual matching.
How to use it
Strict identification: find a strong directional move (≥1 standard deviation against recent range), then mark the LAST opposite-color candle before that move. The body of that candle (open to close) is the order block zone. Mark on higher timeframes (4H, daily) for highest reliability. Trade reactions on retest: buy at bullish order block in uptrend, sell at bearish in downtrend. Stop just beyond the order block extreme.
BTC May 2024: bearish candle at $66,400 (May 14, body $66,400-$65,800) followed immediately by a $5,000 rally to $71,500 over 3 sessions. Order block = $65,800-$66,400. Retest June 11 saw price drop into $66,200, rejected sharply, rallied to $71,000 within 4 days.
Strict identification rules — what makes an order block 'valid'
Three criteria. (1) Preceded by a 'manipulation' move: ideally the candle takes out a recent swing high/low before the directional move begins (combined with liquidity sweep). (2) Followed by a strong directional move ≥1 ATR. (3) Located within or near a higher-timeframe premium/discount zone. Order blocks meeting all three have materially higher reaction rates on retest than those meeting only one or two.
Order block vs supply/demand zone — what's actually different
Operationally, very little. Supply/demand zone trading predates SMC/ICT by years and uses similar identification: find a 'base' candle before a strong directional move, treat as a reaction zone on retest. The SMC framing adds the institutional-flow narrative (which is plausible but not verifiable from charts alone) and tighter rules around what counts as a 'valid' order block. The trade mechanics are essentially identical.
Order block retest dynamics
When price returns to an order block, three outcomes are common. (1) Clean reaction: price enters the zone, reacts immediately, returns in the original direction (highest-reliability outcome — ~55-65% of valid order blocks). (2) Sweep + reaction: price wicks BEYOND the order block briefly (taking liquidity) then reacts (occurs ~20-25% of the time, often the highest-conviction entry as it combines with liquidity sweep). (3) Failure: price closes through the order block in the opposite direction (~15-20%), invalidating the level.
Frequently asked
How is an order block different from regular support/resistance?
Mechanically very similar. The framing differs — SMC treats the order block as a specific institutional execution zone (the last opposite-color candle before the move), while traditional support/resistance is broader (any historic reaction level). Order blocks are a strict subset of S/R with tighter identification rules.
On which timeframe should I mark order blocks?
Higher timeframes have higher reaction rates. Daily and 4H order blocks are most reliable; 1H and 15m have more setups but lower reliability per setup. Best practice: mark on daily/4H, trade entries on 15m/1H when price approaches the higher-timeframe level.
How long do order blocks remain valid?
Until 'mitigated' — meaning price has returned to the zone and reacted (or failed). Unmitigated order blocks can remain valid for weeks or months in trending markets. Mitigated order blocks (already reacted off) are less reliable on second retest unless they've also been 'broken and retested.'
What's the difference between order block and breaker block?
Breaker block = an order block that has been BROKEN (price closed through it in the opposite direction). On retest from the OTHER side, the broken order block can act as resistance-turned-support (or vice versa) — a 'breaker.' Different setup with different rules.
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