AB=CD
HarmonicNeutralReversalReliability:
The foundational harmonic: two price legs AB and CD of similar length and duration, forming a completion zone at D.
Description
BC retraces 0.382–0.886 of AB; CD extends 1.13–1.618 of BC and is often equal in length to AB. It is the building block of every XABCD pattern.
Market psychology
The two-leg symmetry reflects a steady supply–demand rhythm; D is where the second leg reaches balance with the first.
How to trade
Project the AB length from C to estimate D; wait for confirmation at D with a stop beyond the completion point. Both bullish and bearish variants exist.
Confirmation
CD is close to equal with AB, aligns with the Fibonacci cluster, and shows a reversal trigger at D.
Also known as: ABCD, AB CD
Educational content only — not financial advice. Cryptorua reads public market data and never places orders.