Breaker block: what it is, how it forms and how to trade it (ICT)

A breaker block is an order block that failed and switched roles. It was a supply or demand zone (resistance or support), price pushed through it hard and, from then on, it's expected to work the other way around: the old supply becomes support, or the old demand becomes resistance. For it to be a breaker and not something else, the move that failed must have swept a prior high or low first. Without that sweep, the same shape is called a mitigation block.

How to trade it comes down to one sentence: trade the retest, not the break. You wait for price to return to the broken zone from the other side, look for confirmation on a lower timeframe, and put the stop on the far side of the breaker. When the breaker overlaps a fair value gap in the same direction, you have ICT's Unicorn model.

Below you'll find the formation step by step, the difference from the mitigation block, the entry rules, the Unicorn, the most common mistakes, and what the data says. The definitions are those of the most widespread version of the method; there is no glossary written by Huddleston himself.

Free tool: if you use NinjaTrader 8, you can download the structure indicator (it marks breakers) that we built at El Trader Financiado for the community. See the indicator and download it. Breakers only show up with the "Show breakers" option enabled, and the indicator draws any invalidated order block as a breaker without checking for a prior sweep: you check that yourself (without a sweep, it's a mitigation block).

What a breaker block is

It starts from an order block: the last opposing candles before a move, which are expected to be defended when price returns. A breaker appears when that defense fails in a specific way: the move that left the zone sweeps liquidity, turns around, and price breaks structure in the opposite direction with displacement. The zone that didn't hold is left behind, and the ICT reading is that it will now act with the opposite polarity.

How a bullish breaker forms, step by step

1. Sweep. Price makes a low, rises to a swing high, and then drops below that first low. That drop takes out the stops underneath: it's a sell-side liquidity sweep.
2. Confirmed failure. Price turns around and rises with displacement until it closes above the swing high. It's a structure break that marks the earlier drop as a failed move.
3. Mark the breaker. These are the bullish candles at the swing high from which the drop that swept the low began. They were a bearish order block, and that block has just failed. They're marked from high to low.
4. Wait for the retest. When price returns to that zone from above, watch whether the old supply now works as support.

How a bearish breaker forms

It's the exact mirror. Price exceeds a prior high (a buy-side liquidity sweep), turns around, and drops with displacement below the swing low. The bearish candles at the swing low from which the rally that swept the high began (a bullish order block that has failed) stay above as resistance. You sell on the retest from below.

Where a bullish breaker comes from: a bearish order block that fails

A bearish order block is the last bullish candle (or group of bullish candles) before a move down. In the bullish breaker sequence, the bullish candles at the swing high are exactly that: the bearish order block that launched the drop that swept the low. When price rallies again and closes above that high with displacement, the block has failed. That's why a bullish breaker is made of bullish candles: it was a bearish order block. From then on it's expected to work as support, which is why you buy the retest.

Breaker block vs mitigation block

Both are zones that failed and switched roles. The difference comes down to one detail: the sweep.

In ICT the sweep is what gives the sequence its meaning: first the obvious liquidity is taken, then price moves toward the opposite side. That's why many traders require the breaker and discard the mitigation block, or treat it as a lower-quality zone. This is a preference of the method, not something measured.

Breaker block vs order block

• The order block is the zone that originates a move and is expected to be defended in the same direction.
• The breaker is an order block that was not defended: price went through it after a sweep and it is now expected to act in the opposite direction.

The same group of candles can go through both phases. How structure is read (BOS, CHoCH, MSS) and how the original order block is marked is in the guide to order block and market structure.

How to mark a breaker step by step

1. Bias on a higher timeframe (1 hour, 4 hours, daily): which liquidity is price heading toward?
2. Locate the sweep. A prior low or high that was exceeded and recovered. Better if it's a visible level: previous day high or low, session extreme, equal lows or highs.
3. Require the break with displacement. A close beyond the opposing swing, not just a wick.
4. Mark the candles of the failed move with their full range, from high to low.
5. Check whether an FVG overlaps. If the displacement left a fair value gap over the breaker, it may be a Unicorn.
6. Set the invalidation: a clean close through the whole zone cancels the idea.

Strategies with breaker blocks

Breaker retest

This is the base rule: trade the retest, not the break. Entering on the breaking candle means buying or selling far from the invalidation. On the retest, the zone gives you a natural stop on its far side.

The usual description of the method is clear about the quality of the retest: it doesn't always hold. It's treated as a place to look for confirmation on a lower timeframe, not as a spot to leave a limit order blindly. One way to confirm is to wait for a structure shift on 1 to 5 minutes inside the zone.

Unicorn model

The Unicorn is an ICT entry model defined by a single confluence: a breaker that overlaps a fair value gap in the same direction. The sequence is "sweep, shift, overlap":

1. Sweep. Price drops below a prior low, takes liquidity, and comes back above.
2. Shift. The recovery breaks a swing high with energetic candles that leave an FVG.
3. Overlap. The breaker and the FVG occupy the same stretch of price. That intersection is the entry zone.

What is usually done:

• Entry on the pullback to the overlap zone.
• Stop beyond the far edge of the breaker or of the swept swing itself.
• Target at the opposite liquidity (earlier highs or lows) or at the next unfilled zone.
• Invalidation: a decisive close through the far side of the breaker.
• Timeframes: bias and swept level on a higher timeframe; execution of the overlap on 1 to 15 minutes, often inside a killzone.

The idea behind the overlap is to narrow two zones into a tighter area. There is an open-source detector on TradingView that automates it with fixed rules: it requires the FVG to form at the breaker or after it (so as not to mix up the order of events), enters at the center of the zone, and puts the stop 0.4 times the zone height beyond the boundary, with a target at a configurable R multiple. Those parameters are the script author's, not ICT's.

Summary of rules

The New York morning killzone runs from 08:30 to 11:00 NY. The time windows and how to mark the levels that get swept are in ICT killzones.

Common mistakes

• Trading the break. Entering on the candle that breaks structure leaves the stop very far away. The entry is the retest.
• Calling any broken order block a breaker. Without a prior sweep of an extreme, it's a mitigation block.
• Marking the wrong candles. The bullish breaker is the bullish candles at the swing high (the bearish order block that failed), not the bearish candles of the drop.
• Treating the retest as a sure bounce. It doesn't always hold; it's a place to look for confirmation.
• Accepting breaks without displacement. A wick that exceeds the high doesn't confirm the failure of the move.
• Unicorn without causal order. If the FVG formed before the breaker, it isn't the "sweep, shift, overlap" sequence.
• Moving the invalidation. If price closes through the whole zone, the idea is over.

What to combine it with

• Fair value gap: it's the other half of the Unicorn. See fair value gap.
• Market structure: the BOS or MSS that confirms the failure of the move. See order block and market structure.
• Levels and killzones: the sweep is worth more if it happens on a visible level and inside a time window. See ICT killzones.
• SMT divergence: if NQ sweeps the low and ES doesn't, it's a confirmation used by the ICT community. See SMT divergence.
• CRT: a sweep of the range of a 4-hour candle can be the "sweep" of the Unicorn. See CRT trading.

What the evidence says

There is no audited public statistic for the breaker block or the Unicorn model. Everything in circulation is descriptions of the method and examples chosen after the fact.

The closest thing is measuring its pieces. The best public test of the FVG, with placebo zones of the same size, finds no significant difference in any of its 14 measurements. And in a forex broker's backtest, discretionary traders reported a 70-80% hit rate with smart money concepts that, when the rules were coded, "drops to 41%" (with a conflict of interest, no placebo, and not in futures).

The useful takeaway: the breaker gives you a specific place to enter and a clear invalidation point. That helps manage risk. That the zone will hold is not proven.

How it fits in a prop firm

The stop of the breaker goes on its far side; for the Unicorn, beyond the breaker or the swept swing. In NQ, that distance can be tens of points:

With a $1,000 daily loss limit, two 25-point stops on NQ leave you no margin for the rest of the day. The useful rule: if the stop doesn't fit your risk per trade, drop down to micros or pass.

Also:

• News. The retest usually arrives in the NY killzone, which starts at the time of CPI and NFP (08:30 NY). Many prop firms restrict trading around these releases; check your firm's rules.
• Consistency. Targets at distant liquidity = a few very good days. That can clash with the consistency rules of some firms.

You can compare each firm's daily loss, trailing drawdown, and rules in the comparator.

Free NinjaTrader indicator

Our structure indicator for NinjaTrader 8 marks BOS, CHoCH, and MSS, draws the active order blocks, and, with the "Show breakers" option enabled, draws any order block that gets invalidated as a breaker. It doesn't check for a prior sweep: you check that yourself (without a sweep, it's a mitigation block). It's free, built by El Trader Financiado for the community, and available in English and Spanish. Download it with its settings guide on the market structure indicator page.

Frequently asked questions

What is a breaker block?

An order block that failed and switched roles after a liquidity sweep. If it was supply (resistance), it now works as support; if it was demand (support), as resistance.

What is the difference between a breaker block and a mitigation block?

The sweep. In the breaker, the failing move first exceeds a prior high or low. In the mitigation block, it fails without reaching that extreme.

What candles is a bullish breaker made of?

Bullish candles: the ones at the swing high from which the drop that swept the low began. They were a bearish order block; when price closes above that high with displacement, the block fails and starts working as support.

How do you trade a breaker block?

On the retest, not on the break. Enter when price returns to the zone from the other side, ideally with confirmation on a lower timeframe, with the stop on the far side of the breaker.

What is ICT's Unicorn model?

A breaker overlapped with a fair value gap in the same direction, after the sequence of sweep, shift, and overlap. The entry is the intersection of the two zones.

Do breakers always hold on the retest?

No. Neither the usual description of the method claims it nor are there public statistics that measure it. Use it as a zone where you look for confirmation, with the invalidation defined beforehand.

Keep learning

• The 8 free indicators for NinjaTrader 8
• Order block and market structure: BOS, CHoCH, and MSS
• Fair value gap: what it is, CE, IFVG, and entry models
• ICT killzones and Silver Bullet
• Ranking of futures prop firms