ICT & Smart Money
What is a fair value gap in trading?
A fair value gap is a three-candle pattern where price moved far enough, fast enough, that the first and third candle's wicks never overlap. The untouched space between them is the gap. Traders mark it and watch whether price comes back to it.
What it is
A fair value gap is an imbalance left by a fast move
Take any three consecutive candles. If the third candle's low sits above the first candle's high, the space between them was never traded through — a bullish fair value gap. If the third candle's high sits below the first candle's low, it is a bearish one. The middle candle is the fast move that created the gap. The name comes from the idea that price ran ahead of where buyers and sellers were actually transacting, leaving a stretch of chart with one-sided activity behind it. Nothing about that idea is exotic: it is a precise, mechanical definition of a gap inside a candle sequence, which is exactly why it can be tested.
- 01
Find a candle that moved much further than its neighbours
Fair value gaps come from displacement — one candle covering noticeably more range than the candles around it. Without that, the wicks of the surrounding candles overlap and there is no gap to mark.
- 02
Compare candle one and candle three, not candle two
The middle candle creates the move but is not part of the measurement. For a bullish gap, measure from the high of the first candle to the low of the third. For a bearish gap, from the low of the first to the high of the third.
- 03
Mark the untouched range as a zone, not a line
The gap has a top and a bottom, and price can react anywhere inside it. Treating it as a single level forces a precision the pattern does not have.
- 04
Note the timeframe you found it on
A gap on a 1-minute chart and a gap on a daily chart are the same pattern at completely different scales. A 1-minute gap can be filled within seconds and is often just noise; a daily one can sit open for weeks. Always record which chart produced it.
- 05
Track whether, and how far, price returns
The common terms are a partial fill (price enters the zone), a full fill (price crosses the whole zone), and an unfilled gap. Which of these you treat as significant is a rule you have to define and test, not something the pattern decides for you.
How to read it
The gap marks a location, not a signal
A fair value gap tells you where a fast, one-sided move happened. That is a location on the chart worth watching — nothing more. The common reading is that price often revisits these areas before continuing, so traders use an unfilled gap as a place to look for an entry in the direction of the original move, with the far edge of the zone as a natural invalidation point. But 'often' is doing a lot of work in that sentence, and the honest version is that the rate depends entirely on the market, the timeframe, and how much displacement you require before you call something a gap. The pattern gives you a place to look. Whether looking there has an edge on your instrument is a separate question, and it is an empirical one.
Limits
What a fair value gap does not tell you
It does not tell you direction. A bullish gap forms during an up move, but price reaching it says nothing about whether the up move resumes. It does not tell you timing: a gap can sit unfilled for one candle or two hundred, and no part of the definition constrains that. It does not tell you size of reaction: a fill can be a one-tick tag or a full reversal. And on low timeframes it is extremely common — a 1-minute chart on an active session can print dozens, most of which mean nothing, which is why almost every trader using them adds a filter (a minimum gap size, a required displacement, a session window, or a higher-timeframe context) rather than trading every one. That filter is the part that actually decides whether the method works, and it is the part you have to test rather than inherit.
Test the gap rule before you trade it
Reading about fair value gaps on charts you have already seen proves nothing. Traders Journal's backtesting steps through history bar by bar with the fair value gap study on the chart, so you record every setup the rule produced — including the ones that failed — and get a real sample instead of a memory.
Explore backtestingQuestions
What is a fair value gap in trading?
A fair value gap is the untouched price range between the first and third candle of a three-candle sequence, created when the middle candle moves far enough that the outer candles' wicks never overlap. It marks a stretch of chart where price moved one-sided and quickly, and traders watch whether price returns to it later.
How do you identify a fair value gap on a chart?
Look for a candle that covers much more range than its neighbours, then compare the candle before it with the candle after it. If the later candle's low is above the earlier candle's high, that space is a bullish fair value gap. If the later candle's high is below the earlier candle's low, it is a bearish one. Mark the whole range as a zone, and note which timeframe you found it on.
Do fair value gaps always get filled?
No. Plenty are never revisited, and there is no rule in the definition that requires a fill. The share of gaps that fill varies by market, timeframe and how much displacement you require before calling something a gap — which is exactly why the fill rate is something to measure on your own instrument rather than accept as a number someone quoted.
What is the difference between a fair value gap and an order block?
They describe different things in the same move. A fair value gap is the empty space the move left behind, measured across three candles. An order block is the last opposing candle before the move started, treated as where the positioning happened. They often sit close together on the chart, but one is defined by an absence of trading and the other by a specific candle.
What timeframe is best for fair value gaps?
There isn't a universally best one, but higher timeframes produce fewer and more meaningful gaps. Low timeframes print them constantly, and most of those are noise. If you are starting out, work on a timeframe where you see a handful of gaps a day rather than dozens, and add lower timeframes only once the rule has held up.
Are fair value gaps reliable?
On their own, no more reliable than any other single pattern. A fair value gap is a location, not a signal — it tells you where to look, not what to do. Traders who get consistent results from them add conditions: a minimum gap size, a required displacement, a session filter, or higher-timeframe direction. Whether your particular combination has an edge is something to establish by testing it over a real sample, not by reviewing charts you already know the outcome of.
Does Traders Journal have a fair value gap indicator?
Yes. Fair value gaps are one of the built-in ICT studies you can turn on in the charts and backtesting workspace, so the zones are marked automatically as you step through price history.