What is a Fair Value Gap?
An FVG is a price imbalance built across three candles. It appears when the market moves quickly and leaves a gap between the current candle and the candle two periods earlier.
The platform distinguishes bullish and bearish FVGs. These zones may serve as targets, retest areas or mitigation zones, without implying that they must always be filled.
The table displays type, High and Low boundaries, detection date and time, status and delay before the first test. A minimum-size setting filters out gaps that are too small.
What is an Order Block?
An Order Block is the last opposing candle before a significant impulse. A bullish OB is a bearish candle before an upward impulse; a bearish OB is a bullish candle before a downward impulse.
The validation structure includes Base, the timestamp of the candle forming the OB, and Impulse, the timestamp of the candle confirming the impulse or break of structure.
The table displays boundaries, status and width. A narrow block provides a more precise location, while a wide block represents a more diffuse area.
Fresh, Touched and Mitigated
Fresh describes an intact zone that has never been touched. Touched corresponds to a first interaction. Mitigated indicates a consumed or invalidated zone; Filled is also used for a completed FVG.
This classification prevents an intact zone from being compared with an area that price has already crossed. Status is part of the reading and must be associated with the timeframe.
Differences and complementarity
An FVG measures an inefficiency in the price move, whereas an Order Block locates the base candle before the impulse.
Their overlap may create location confluence, but it does not guarantee a reaction. Trend, structure, volume and Price Action remain necessary.
How to use the FVG-OB page
After selecting the asset and timeframe, note the type, boundaries, status, detection time and test delay, together with width, Base and Impulse for an OB.
The zone is then placed back into the market structure. A bullish OB below price is more coherent in a confirmed bullish flow. A bearish FVG above price may act as a target or resistance depending on context.
The trader may wait for rejection, expansion, structural change or volume. The possibility of placing a limit order in a zone does not replace confluence and invalidation.
Combined-use examples
In a retracement example, a Fresh bullish H1 FVG appears within a bullish higher-timeframe trend. A return to the zone triggers monitoring. Sweep Low, CHOCH, lower wick and BUY volume may confirm the reaction through MTF-SYNC.
In an SMC-FIBO example, a GOLDEN zone between 61.8% and 70.5% overlaps a Fresh bullish OB. REJECTION followed by EXPANSION strengthens the location, provided the structural origin remains valid.
In another case, a LONG setup faces a bearish FVG located before the target. SMC-FIBO may activate a Hard Block if the TP lies inside this opposing zone.
Previous High/Low levels add fixed context. A bullish OB near a PWL may be notable, but it must still be combined with trend and momentum.
The LEFT module in 4D aggregates FVGs, OBs, support, resistance, Fibonacci and trendlines. The FVG-OB page provides detail, while LEFT summarizes proximity and conflicts.
Common mistakes to avoid
Assuming that every FVG must be filled.
Entering automatically at first contact without waiting for a reaction.
Ignoring the zone's timeframe.
Overlooking the width of an Order Block.
Using a Mitigated zone as if it were Fresh.
Maintaining a scenario after its structural origin has been exceeded.
Using an FVG or OB alone, without liquidity, structure, trend, volume or BOS/CHOCH.
Fair Value Gaps describe price imbalances, while Order Blocks locate the last opposing candle before an impulse. Qualifying them by type, boundaries, timeframe, status and width turns a plotted zone into a verifiable scenario. Combining them with SMC-FIBO, MTF-SYNC, High/Low and 4D Market Trigger adds confirmations and invalidation.