Advanced Gap Theory
Also: Gap Theory, Gap Hierarchy, ICT Gap Classification, Breakaway Gap, Measuring Gap, Common Gap, Swing Projection Theory
Visual Context Required
This concept requires chart visuals for full understanding.
Advanced Gap Theory is ICT's hierarchical classification of price gaps (fair value gaps / imbalances), organized by their expected behaviour, depth of fill, and projection potential. Gaps, like PD arrays, have a hierarchy that determines how they should be traded. Three classes of gaps: 1. COMMON GAP (standard FVG): - The ordinary fair value gap taught in baseline ICT methodology. - Can be reclaimed or traded back to as support or resistance multiple times. - Eventually fills completely. - No directional bias beyond the immediate PD array function. 2. BREAKAWAY GAP: - Requires directional context — price must be breaking away from a level already identified as a significant support or resistance (a PD array from which a move was anticipated). - Leaves a portion of the gap unfilled even after price returns to the area. - "It's breaking away from a level that we would already anticipate being some measure of a short [or long]." - The unfilled portion signals ongoing directional commitment. - Qualifies as a measuring gap when the unfilled portion persists. 3. MEASURING GAP: - Approximately half of the implied dealing range (the total expected move distance). - Identified because: (a) it leaves a portion permanently open, and (b) it occurs at approximately the midpoint of the expected price swing. - Swing Projection Method (ICT "swing projection theory"): i. Take the swing high of the move (top of the range being measured). ii. Draw a Fibonacci from that high down to the low of the measuring gap. iii.Extend the Fibonacci to the -1.0 standard deviation level (negative 1 SD). iv. That -1 SD level is the precise algorithmic target for the full move. - A measuring gap CONFIRMS and QUANTIFIES the implied dealing range. - It qualifies as a measuring gap by leaving a portion of the gap open permanently (price never fully fills it on a retrace).
Identification7
- Step 1 — Identify the gap: Locate a fair value gap (3-candle imbalance) on the relevant timeframe.
- Step 2 — Classify by context:
- Common gap: Any FVG with no special directional context; expect full eventual fill.
- Breakaway gap: FVG forming at or near a known PD array (order block, breaker, equilibrium level) from which a directional move was expected; watch for incomplete fill on first return.
- Measuring gap: A gap that (a) occurs mid-move, (b) leaves a portion open on retracement, and (c) is approximately half the distance of the anticipated total swing.
- Step 3 — Measure (for measuring gap): Place Fibonacci from swing high to the low of the measuring gap; project -1.0 SD level as target.
- Step 4 — Confirm (for measuring gap): The gap must leave a portion open — if price fully fills the gap on retracement, it cannot be the measuring gap.
Entry3
- Common gap: Trade as standard FVG — limit entry at gap range, expecting a bounce and continuation.
- Breakaway gap: Trade the unfilled portion as strong support/resistance; limit entry at the gap boundary that remains open.
- Measuring gap: Use the -1 SD target (swing projection) as the trade target; enter on any valid model in the direction of the implied dealing range.
Stop2
- Common gap: Standard FVG stop rules — below the gap low (bullish) or above the gap high (bearish).
- Breakaway/Measuring gap: Stop beyond the full gap range — if the gap fully fills in the wrong direction, the premise is invalidated.
Target3
- Common gap: The opposing PD array or liquidity pool.
- Breakaway gap: Previous swing high/low or next significant PD array.
- Measuring gap: -1.0 standard deviation of the Fibonacci drawn from swing high to measuring gap low.
Invalidation3
- Common gap: No specific invalidation — it eventually fills; the PD array function is exhausted when fully filled.
- Breakaway gap: If price fully fills the gap AND closes convincingly through it, the breakaway character is negated; reclassify as common gap.
- Measuring gap: If price fills the gap completely and continues in the opposite direction, the measuring gap classification was incorrect; the implied dealing range projection is invalidated.
Inferred Conditions (Unvalidated)
- All three gap types are subsets of the fair value gap concept; the hierarchy determines expected fill behaviour and projection potential.
- A breakaway gap that leaves a portion open transitions into a qualifying measuring gap — the two classifications can overlap.
- The swing projection / -1 SD method is applicable to any gap that qualifies as measuring, not just those in one direction.
- Larger timeframe measuring gaps (daily, weekly) project larger implied dealing ranges.
ICT Quotes
""Gaps are just like a pdra matrix. They have any hierarchy.""
Timeframes
Version History2 versions
ICT YT - 2023-06-08 - ICT Mentorship 2023 - Advanced Gap Theory Introduction
Original hierarchical classification of gaps into common/breakaway/measuring. Introduction of the swing projection theory (-1 SD Fibonacci method) for measuring gap targets. This extends the 2016/2022 FVG teaching by adding classification and projection methodology.
ICT YT - 2024-09-24 - ICT 2024 Mentorship - Lecture 33.srt
"If it stays open here, this is a breakaway gap. Well, I'm sorry, a measuring gap. I'm sorry. I apologize, meaning that half of the move... the low of the gap. That gives me the the fair level to reach…"
Live application of measuring gap concept to the New Week Opening Gap (NWOG): the NWOG acts as a measuring gap when its midpoint (consequent encroachment) remains open after the initial gap fill attempt. The projected target is the gap low (bottom of the NWOG) as the measuring gap low, with the full projected run extending to the -1 SD level below. ICT momentarily confuses breakaway and measuring gap labels live (self-corrects: "I'm sorry, a measuring gap"), confirming these are distinct concepts even in 2024. No change to the 2023 definition.
Notes
The underlying FVG concept is from 2016. The 2023 content adds the hierarchy and projection methodology — no material conflict with prior definitions, only extension. The "swing projection theory" name is ICT's term for the Fibonacci -1 SD projection method applied to measuring gaps. The -1 SD level refers to the negative one standard deviation extension on a standard Fibonacci tool, which in most charting platforms is the -1.0 extension level below the low (or above the high for bullish).
Asymmetry Notes
The most powerful application is the measuring gap with swing projection: knowing approximately where the move ends (-1 SD) before it gets there gives a precise target for position management. ICT uses the bearish example most frequently (measuring gap in a bearish implied dealing range), but the methodology is fully symmetrical. The key distinction between common and breakaway is the directional context — a gap forming in a vacuum is common; a gap forming while price is departing a known PD array level is breakaway.