Harmonic and chart patterns
AB=CD pattern
A move, a pullback and a second move of about the same size: the simplest harmonic pattern.
La idea en pocas palabras
Markets often move in steps of similar length. If A-B was a 100-pip move and B-C a pullback, C-D is often about 100 pips too.
Cómo se calcula
Click A, B, C and D. The tool shows BC as a ratio of AB, CD as a ratio of BC and CD as a percentage of AB. After C it draws where D is likely (CD = 100%, 127.2% or 161.8% of AB); after D it draws the targets (38.2% and 61.8% of CD back from D) and a stop beyond the next extension of AB.
BC usually 0.618–0.786 of AB
CD ≈ AB (100%), often 1.272–1.618 of BCCómo usarlo
- Project D to find a potential end of the move and plan exits or reversals there.
Sacar conclusiones
- CD much longer than AB shows a strengthening trend.
Ejemplo
AB rises 80 points, BC retraces 50 points (0.625), so D is expected about 80 points above C.
Los precios de los ejemplos son ilustrativos.
Ten cuidado con
- Like all patterns, use it with other evidence.
Un poco de historia
Described in H. M. Gartley's work and popularised by Larry Pesavento and Scott Carney.
Solo contenido educativo. Ningún indicador ni patrón predice el futuro, y nada de lo aquí expuesto es asesoramiento de inversión.