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Breaker Block definition
An order block that price traded through and then reclaimed, flipping its directional bias.
This page is the short definition. For rules, worked NQ examples and invalidation, read the full Breaker Block guide.
What it means in ICT
A breaker block starts as an opposing order block, fails, and then acts as a structural level where price either accelerates through or reverses sharply.
NQ example
When NQ takes out the pre-market high and immediately reverses, the last bearish 1-minute candle before the sweep becomes a bullish breaker block entry.
Related guides
Practice Breaker Block in replay
Load a historical NQ session and watch for breaker block bar-by-bar, with ICT overlays drawn automatically.
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, 1D, 1W) so every bar agrees across timeframes. Sessions cover the full CME Globex day, 18:00–17:00 ET. ICT overlays are drawn algorithmically from the same price data used in the replay trainer.