Fair Value Gaps (FVG / Imbalances)
Three-candle price 'imbalances' assumed to get 'filled', used as targets and entries.
A popular SMC pattern with no peer-reviewed, out-of-sample published evidence of a tradeable edge after costs.
- Why it fails
- Gaps fill often simply because price is noisy; no out-of-sample evidence of edge after costs.
A fair value gap (FVG), or imbalance, is a three-candle pattern in which the wicks of the first and third candle leave a gap around the middle candle. It is assumed that price will return to “fill” the gap, and the zone is used as a target or an entry.
The honest, narrow claim is this: there is no peer-reviewed, out-of-sample published evidence that FVGs produce a tradeable edge after costs. This is not a claim of fraud, nor a claim that no one ever profits around such zones. It is a statement about the evidence base.
The central issue is that gaps fill often simply because price is noisy. In any liquid market, price oscillates and frequently revisits recent levels. So “the gap got filled” is a weak signal — it happens routinely whether or not the gap had any predictive content. A high fill rate is not the same as a positive expectancy after costs; you need to show that entering at the gap, with realistic stops and targets, beats the spread and commission over many out-of-sample trades. That demonstration is what is missing.
The underlying observation — that markets retrace and that price has memory of recent ranges — is real. The unsupported part is the specific predictive rule built on top of it.
The broad technical-analysis literature (Park & Irwin 2007; Lo, Mamaysky & Wang 2000) finds mixed-to-weak results for rule-based methods after costs. FVGs have not been subjected to comparable testing, and the burden of proof rests with whoever claims an edge.
Sources
- No peer-reviewed, out-of-sample published evidence of a tradeable edge
- Park & Irwin (2007), "What Do We Know About the Profitability of Technical Analysis?", Journal of Economic Surveys
- Lo, Mamaysky & Wang (2000), "Foundations of Technical Analysis", Journal of Finance
Frequently asked
Do fair value gaps work in 2026?
There is no peer-reviewed, out-of-sample published evidence that fair value gaps produce a tradeable edge after costs. Gaps do frequently get "filled," but that is largely what you would expect from noisy price wandering back and forth over a small range — it is not, on its own, proof that the gap predicted the move. Frequent filling and a forecastable edge are different things.
Are FVGs / imbalances profitable in 2026?
We have seen no documented, out-of-sample result showing that trading FVGs is profitable after spreads, commissions and slippage. The pattern formalises the real observation that price often retraces, but the specific claim — that these three-candle imbalances are reliable targets and entries — has not been validated in the published record. The burden of proof is on whoever claims the edge.
Not investment advice — your mileage may vary, but the burden of proof is on the person claiming an edge. This entry describes general research and published evidence (or its absence), not a recommendation. See the full disclaimer.