What a Fair Value Gap actually is
Imagine a staircase where each step is a price level. Normally the market climbs or descends step by step as buyers and sellers negotiate at every price in between. Sometimes it doesn't — a burst of aggressive size moves price so fast that it skips whole steps without auctioning through them. Those skipped steps are the gap.
Formally: a bullish FVG forms when the low of the third candle is above the high of the first. A bearish FVG is the inverse — the high of the third sits below the low of the first. The middle candle is the thrust; the gap is the range the middle candle's body covered without leaving a footprint at every price.
Bullish FVG
low(C3) > high(C1). Aggressive buying; the gap sits between those two levels and tends to act as support when price revisits it.
Bearish FVG
high(C3) < low(C1). Aggressive selling; the zone sits overhead and tends to act as resistance on a retest.
Why the gap matters to both sides of the tape
FVGs are a bridge between what institutions need to do and what retail traders can see. The same structure serves both — for opposite reasons.
Desks leave gaps on purpose — or at least accept them — because the unfilled range becomes future utility:
- ·A liquidity pool to execute the next tranche into when price returns.
- ·A stop-hunt zone — retail tends to place stops just past the high / low that created the gap.
- ·A reference level for the desk's next positioning window.
For a retail trader the gap is something much simpler — a drawn line with predictive value:
- ·A high-probability reaction zone for pullback entries.
- ·Objective support/resistance that isn't drawn after the fact.
- ·A measurable edge — gaps with clean geometry retest cleanly more often than they don't.
Where it fits inside ICT
Fair Value Gaps are a cornerstone of the Inner Circle Trader methodology — the Michael Huddleston framework for reading smart-money behaviour on a chart. ICT rests on three primitives that work together:
Higher highs, lower lows, the trend the session is in. Without this, the other two primitives don't have a direction to work inside.
The last opposing candle before a large move — where institutional positions were accumulated. “Where they got in”.
The inefficiency left behind when that move happened. “What they left behind”. The magnet for the future retest.
Order blocks answer “where did they enter?”; FVGs answer “what did they skip on the way out?” Using them together, on top of a clean market-structure read, is the ICT framework in one sentence.
“Fair Value Gaps are institutional footprints in the market. Learn to see them, and you'll never look at price action the same way again.
Conceptual takeaways
- An FVG is a three-candle imbalance — a range price skipped during a fast move.
- Institutions use gaps as future liquidity pools; retail uses them as reaction zones. Same structure, opposite reasons.
- Inside ICT, FVGs are one of three primitives — structure, order blocks, gaps — that together describe institutional intent.
Next chapter: how to identify one on a live chart without second-guessing the pattern — including the filters that separate tradeable gaps from noise.
The Fair Value Gap indicator is free — install it on your NT8 and watch gaps print in real time while you read through the rest of this series.