Fair value gaps (FVG): imbalance you can see

Three candles, one gap. Why price often returns to fill an imbalance, and how to use it.

SMCIntermediate4 min read6 chaptersBy Rao Umer · 6 Oct 2026
In plain words

When price moves very fast, it leaves a gap where almost no trading happened. You can see it as three candles where the first and third candles do not overlap. Price often comes back to fill part of that gap before it carries on.

In this lesson
  1. Three candles, one gap
  2. Why price returns
  3. A worked example on gold
  4. Common mistakes
  5. Inversion gaps and the balanced price range
  6. Using FVGs well
01

Three candles, one gap

A fair value gap forms when one candle moves so fast that the candles on either side do not overlap. In a bullish FVG, the high of candle one is below the low of candle three. The space between them is the gap.

FVGfilled into the gap
The gap a fast candle leaves behind gets filled.
Watch it play out2 examples in one player
Pick an example · switch BUY / SELL
Example · Gap fill and continuation

    The gap is filled and the trend carries on.

    02

    Why price returns

    A gap means orders were filled on one side only. The market tends to revisit those levels to offer the other side, which is why FVGs act like magnets and like support or resistance on the way back.

    03

    A worked example on gold

    At the New York open, gold jumps 120 pips in a single 15-minute candle. Looking at the candle before and the candle after, there is a clear space between them: a bullish FVG.

    Over the next hour, price drifts back down into that space. It slows near the middle of the gap, volume dries up on the down candles, and buyers step in again. The gap acted as support on the way back.

    If that FVG also overlaps an order block and sits in discount, it becomes one of the strongest zones you can mark.

    04

    Common mistakes

    • Expecting every gap to fill completely. Strong trends often fill only part of a gap, or none.
    • Treating the gap edge as an exact line. Work with the zone and expect overshoot.
    • Trading gaps against structure. A bullish FVG in a clear downtrend is more likely to break.
    • Ignoring news. Gaps created by a news spike can behave unpredictably for a while.
    05

    Inversion gaps and the balanced price range

    FVGiFVGnow resistance
    An FVG that failed becomes an inversion FVG.
    BPR
    Two gaps overlap: a balanced price range.

    Gaps do not only hold. When price closes straight through one, it often comes back and respects it from the other side. And when a bullish and a bearish gap overlap, the overlap (BPR) is one of the tightest, most precise zones in Smart Money trading.

    RTC AI draws normal gaps in teal, inversion gaps as purple dashed boxes and BPR in yellow, each with its own switch in Layers.

    06

    Using FVGs well

    • Prefer gaps created by a move that also broke structure.
    • Prefer gaps in discount for buys and premium for sells.
    • Combine with an order block: an OB plus an FVG is stronger than either alone.
    • Ignore tiny gaps on very low timeframes during quiet hours.

    Key takeaways

    • FVG = candle one and candle three do not overlap.
    • Price often returns to fill part of the gap.
    • Strongest when combined with structure and an order block.
    Check yourself

    Three quick questions

    0 / 3
    01How do you spot a bullish FVG?
    02Why does price often return to a gap?
    03A bullish gap is closed through by a strong down candle. What is it now?
    Next lessonOrder blocks: how to find and grade themSMC · Intermediate · 4 min → RTC Mentorship · $200Want this applied to live charts?See the mentorship →

    Educational content only. Not financial advice. Chart examples are illustrations, not real trades.