Harmonic Pattern
Any of the XABCD patterns (Gartley, Bat, Butterfly, Crab) that use precise Fibonacci ratios to identify Potential Reversal Zones.
Harmonic Patterns are a class of chart patterns defined by specific Fibonacci ratios between consecutive legs. Unlike classical patterns, harmonics require exact ratio compliance — not approximate — to define a valid Potential Reversal Zone (PRZ).
The PRZ is where two or more Fibonacci measurements cluster at the same price. Entries are placed as price reaches the PRZ, with stops beyond the key ratio level. Targets use Fibonacci extensions of the CD leg or prior swings.
- All harmonics share the XABCD structure — the ratios differ per pattern.
- Software scanners are commonly used to automate ratio compliance checks.
Related Terms
ABCD Pattern
The simplest harmonic structure — a four-point zigzag where BC is a Fibonacci retracement of AB and CD equals AB in length and time.
IntermediateBat Pattern
A harmonic XABCD pattern with a deep AB retracement and a D point near 88.6% of XA — offering a tight stop and favorable risk/reward.
AdvancedButterfly Pattern
A harmonic XABCD pattern where D extends beyond X — identifying extreme reversals at the end of large moves.
AdvancedCrab Pattern
The most extreme harmonic pattern: D extends to a 161.8% XA projection, marking deep reversal zones at market extremes.
AdvancedGartley Pattern
A five-point harmonic pattern (XABCD) using specific Fibonacci retracements that marks high-probability reversal zones.
AdvancedThree Drives Pattern
Three symmetrical price drives toward a reversal point, each drive an equal Fibonacci extension — signals exhaustion of the dominant trend.
Advanced