Using Fibonacci Ratios to Define Harmonic Reversal Patterns

Summary

The article explains how Fibonacci retracements measure how much of a prior price swing has been recovered, while extensions project levels beyond that swing. It describes calculating these levels from swing points and shows how the resulting ratios help define harmonic patterns. The focus is on the Gartley and Bat structures, with XA, AB, BC, and CD legs forming a potential reversal zone when their proportions fit specified Fibonacci ranges.

The material is an introductory guide to chart interpretation and MQL5 calculations, not a tested trading system. It gives no performance evidence that these patterns predict profitable reversals. Its ratios are presented as criteria for recognizing candidate setups, and the article stresses that small deviations can invalidate a pattern. The promised automated detection and further pattern implementations are deferred to a later installment.

Key ideas

• Retracements measure a pullback relative to a prior swing, while extensions project levels beyond it.
• Harmonic patterns are identified by relationships among price legs and specified Fibonacci ratios.
• The Gartley and Bat examples use retracement and extension zones to locate candidate completion points.
• A pattern match indicates a possible reversal area, not evidence of a profitable trade.
• The article introduces the calculations but leaves automated pattern detection to a later installment.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.