Gap Theory — Novice, Pro, Window & Significant
What a real gap is
A real gap occurs when the opening price of a candle is beyond the previous candle's high or low — no trading happened in that price range. This represents a genuine imbalance: buyers or sellers were so urgent they accepted the gap price without waiting for the market to traverse the range.
Inside gap vs outside gap
An inside gap opens within the previous candle's range (price gapped but stayed inside the prior session). This shows mild imbalance. An outside gap opens beyond the previous candle's extreme — price jumped past the entire previous session. This is a much stronger signal of imbalance and urgency.
Novice gap — with the trend
A gap that occurs in the direction of the existing trend, typically at the beginning of a new leg. Called 'novice' because retail traders see it and think 'it's too late to enter'. However, a novice gap INTO a fresh demand (in uptrend) or supply (in downtrend) zone significantly strengthens that zone's quality.
Pro gap — against the trend
A gap against the existing trend. This is where a zone is being strongly defended — price gaps away from a zone in the opposite direction of the trend. Pro gaps mark the highest-quality zones because they show institutional urgency against the prevailing move.
Window gap — the zone IS the gap
A window gap creates an uncovered price range — an entire area that has never been traded. This gap space becomes a zone by itself. Mark the top of the last pre-gap candle as proximal (for a window gap up) and the bottom of the first post-gap candle as distal. The zone is the gap space.
Significant gap — engulfs multiple candles
When a gap opens so far that it engulfs the entire range of one or more previous candles. This signals extreme imbalance — an event-driven surge. Treat the entire covered area as a potential zone. These are rare but produce some of the strongest moves.
Practice checklist
- Check if the gap is inside or outside the previous candle's range
- Identify direction: with trend = Novice; against trend = Pro
- Window gap: mark the uncovered range as a zone (proximal at top of last pre-gap body)
- Significant gap: treat the engulfed area as a zone
- A gap-out of a base = Strong zone classification
Mistakes to avoid
- Assuming all gaps fill — novice and significant gaps often do not fill for a long time
- Ignoring window gaps as 'just a data issue' — they are real supply/demand imbalances
- Not updating zone classification when a pro gap changes the zone's strength rating