OptiNod Academy

Fair Value Gap (FVG): The Empty Zone Left by an Imbalanced Move

A strong one-sided move leaves behind an empty zone with little trading. Price often returns to that zone, and a fresh FVG can support the pullback.

> A strong one-sided move leaves behind an empty zone where very little trading took place. Price often returns to that zone, and the fresher the zone, the cleaner the reaction tends to be.

In previous articles, we looked at supply and demand zones and liquidity hunts. This article focuses on the empty zone created inside a strong move: the Fair Value Gap, or FVG.

An FVG is defined by three candles. In a bullish case, when the middle candle moves sharply in one direction, an empty zone can form between the high of the first candle and the low of the third candle, with no candle filling that space. That empty zone is the FVG. In a bearish case, the logic is reversed: the empty zone forms between the low of the first candle and the high of the third candle.

Traders often mark every gap on a chart as an FVG, but a meaningful FVG needs to meet certain conditions. Once you understand why price tends to come back and fill that empty zone, it becomes much clearer which FVGs are worth using and which ones should be ignored.

A bullish FVG defined by three candles, the gap lying between candle one's high and candle three's low

An FVG is the empty zone skipped by an imbalanced move

The empty zone forms because of speed. Under normal conditions, buyers and sellers trade with each other as price moves through a level. But when one side pushes aggressively, price can skip through a price range with very little trading, leaving unfilled orders from the other side behind. That skipped range is the FVG.

This is easier to see through the order book. When price moves slowly through a range, the bids and asks in that area are filled one by one. But when a large wave of buying sweeps through the offers above, some sell orders in the middle of the range may never be reached before price moves higher. Those untouched orders remain inside the empty zone.

BTC on October 16, 2023 is a good example. That day, BTC opened at $27,154 and exploded to $30,000. As a result, an empty zone with very little trading was left between the previous candle’s high on October 15 at $27,293 and the next candle’s low on October 17 at $28,069. The $27,293-$28,069 area was the FVG.

Price tends to come back and fill the empty zone

Price often returns to the empty zone to complete the trading that was skipped. Orders that were not filled during the fast move remain there, and when price comes back, those orders can become active again.

In the October example above, BTC briefly pulled back to around $28,100 two days after the explosive move. That was near the upper edge of the FVG at $28,069. Price stalled above it, then resumed higher and reached $35,000 within a few days. A fresh FVG supported the pullback.

Freshness matters. The first touch of an empty zone usually produces the strongest reaction. Once the zone has been filled deeply, fewer resting orders remain, so the next reaction is usually weaker.

Not every FVG gets filled. Weak FVGs can be ignored by price, and FVGs that form against the larger trend may be filled and then traded straight through. That is why an FVG should not be traded automatically on its own. Freshness and the larger trend have to be considered together.

A strong FVG often only gets tapped at the edge

An FVG formed in a strong trend often gets only a shallow tap at its upper edge before price continues in the trend direction. Price does not pull back deeply enough to fill the entire empty zone. The shallow retracement itself is a sign that the move still has strength.

BTC in late February 2024 is an example. On February 27 and 28, BTC exploded from the $54,000 area to $64,000, leaving an FVG between $54,910 and $56,692. BTC then rallied to $69,000 in March and did not return to that FVG for some time.

Strong FVGs can remain unfilled for a long period. So instead of waiting only for an FVG pullback and missing the entire trend, use FVGs as a tool for finding better entries within the larger move. An unfilled FVG can also become a target later when price makes a larger move toward it.

In a strong trend, price taps only the FVG's upper edge before continuing in the trend direction

The larger the empty zone, the stronger the signal

Not all FVGs are the same size. The larger the empty zone, the more one-sided the move was. It also means more unfilled orders may remain there, which can give stronger support to price when it returns.

A narrow gap that appears briefly on a small timeframe and disappears is usually closer to noise. If the gap is too narrow, price can pass through it in a single candle, making any reaction hard to trade.

That is why it is better to focus only on clear FVGs created by large moves. On the daily chart, the strongest FVGs are created by candles that are several times larger than the usual daily range. There are usually only a few of these on a chart.

How FVGs differ from supply and demand zones

FVGs are often confused with supply and demand zones. They refer to different parts of the same strong move. A supply or demand zone is the tight consolidation before the move begins: the origin of the move. An FVG is the empty zone created in the middle of the move. The order block, covered in the next article, refers to the final opposite-colored candle before the move.

All three can appear inside the same move. Price may leave a tight consolidation, creating a demand zone; the final bearish candle before the move becomes the order block; and the fast move away creates an empty zone, or FVG. The key is to identify which level is the clearest and then watch how price reacts when it returns there.

The strongest setups appear when all three overlap in the same area. When they appear separately, choose the freshest level that aligns with the larger trend. Naming the level precisely comes later. The first thing to watch is how price reacts when it comes back to that area.

How demand zone, order block, and FVG sit within a single bullish move

Freshness and the larger trend separate useful FVGs from noise

There are three criteria for a meaningful FVG. It should be fresh, it should align with the larger trend, and the move that created it should be strong enough for the empty zone to stand out clearly.

Fresh means price has not yet touched the empty zone. Once an FVG has been touched and filled, fewer orders remain, so the next reaction is usually weaker. Aligning with the larger trend means that in an uptrend, only bullish FVGs are treated as potential long entries.

Small timeframes produce countless FVGs. If you mark all of them, the chart becomes covered with empty zones and loses its usefulness. Filtering for FVGs created by strong moves on the daily or weekly chart makes the important levels much clearer.

An FVG becomes stronger when it overlaps with another level. If a fresh FVG lines up with a supply or demand zone or a prior swing low, multiple reasons point to the same area, and price is more likely to react clearly when it returns.

Enter on the first pullback into a fresh FVG

The basic FVG trade is to follow the larger trend, wait for the first pullback into a fresh FVG, and enter only after confirming the reaction. If price reacts immediately from the top of the FVG, that is the entry area. If price drives deep into the empty zone, the signal is less fresh. The faster the reaction from the upper edge, the stronger the FVG.

[ ] Entry condition: The weekly chart is in an uptrend. On the daily chart, there is a fresh bullish FVG created by a strong bullish candle, and price pulls back to the top of that FVG for the first time.
[ ] Entry: If price touches the top of the FVG and then prints a bullish candle with a long lower wick, buy at that candle’s close.
[ ] Stop loss: Place the stop 1 ATR below the bottom of the FVG.
[ ] Invalidation: If a daily candle closes below the bottom of the FVG, treat the empty zone as filled and exit.

FVG entries become more reliable when combined with market structure. The most reliable entry is a pullback into a fresh FVG left behind by a move that confirmed the uptrend by closing above the previous high on the daily chart, forming a break of structure (BOS).

Price pulls back to a fresh bullish FVG's upper edge, finds support, and resumes the trend

An FVG is rarely a complete entry signal by itself. The empty zone only identifies where price may return. The actual entry depends on how price reacts at that level. FVGs are most useful as a tool for narrowing the area to watch. In practice, it is easier to track only a few clear FVGs left by major moves and leave the rest of the chart unmarked.