What does the Crab (and Deep Crab) harmonic pattern tell traders?
Just like the butterfly, it can help traders identify when a current price move is likely getting to its end. This means traders can enter the market just as the price changes direction in the opposite way.
The crab and deep crab represent important overbought and oversold conditions, and reaction after completion is mostly sharp and fast. It is the opinion of many analysts and traders that the crab pattern and deep crab represent some of the quickest and most profitable patterns out of all harmonic patterns.
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The critical aspect of this pattern is the tight Potential Reversal Zone created by the 1.618 of the XA leg and an extreme (2.24, 2.618, 3.14, 3.618) projection of the BC leg but employs an 0.886 retracement at the B point unlike the regular version that utilizes a 0.382-0.618 at the mid-point. The pattern requires a very small stop loss and usually volatile price action in the Potential Reversal Zone.