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Glossary

Partial fill

A partial fill is when price trades back into a gap but does not reach its far edge, so part of the gap is left untraded.

By Michael H.. Last updated . Corrections log

Definition

A partial fill is when price trades back into a gap but does not reach its far edge, so part of the gap is left untraded.

This is the touched state in this site's terms. The remaining part is measured as the distance from the deepest point price reached to the far edge.

A gap can be touched many times and still be open on the far side. It is only filled when a candle trades through the far edge.

On a real chart

GBPUSD15 minute1 bullish 4 bearish ยท 5 gaps by the rule
1.320001.322001.3240006:0008:0010:0012:0014:0016:0012345
  1. 1Bearish1.32375 to 1.32393formed 09:30 UTCNot revisited by 18:00 UTC
  2. 2Bearish1.32322 to 1.32358formed 09:45 UTCRe-entered at 09:45 UTC, not traded through
  3. 3Bearish1.32202 to 1.32212formed 11:15 UTCTraded through at 15:00 UTC
  4. 4Bearish1.32007 to 1.32016formed 12:45 UTCTraded through at 12:45 UTC
  5. 5Bullish1.32007 to 1.32020formed 13:15 UTCTraded through at 13:15 UTC
GBPUSD, 2026-10-07, 06:00 to 18:00 UTC. Real candles: Dukascopy 15-minute candles, read 2026-10-31. Fair value gap by the three-candle wick rule, no minimum size. Each box runs from its gap until a later candle trades through its far edge, or to the end of the chart.

GBPUSD, 7 October 2026, 15 minute candles, 06:00 to 18:00 UTC. The rule finds 5 gaps in this window. A bearish gap whose third candle opens at 09:30 UTC runs from 1.32322 to 1.32358, a size of 0.00036 in price. Price traded back into it as far as 1.32325 and no further, which leaves 0.00033 of the gap untraded, so it is touched and not filled.

The window was chosen because it shows the term clearly. It is one chart, and it says nothing about what the next gap will do.

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