Crab Harmonic Pattern Explained
The Crab pattern was first identified in 2001. It goes by a few names, but it’s most commonly known as the Crab pattern — a reversal pattern and one of the harmonic trading patterns. Related reading: ABCD Harmonic Pattern Rules.
The pattern is made up of 5 points — X, A, B, C, and D — and the Crab is distinguished by its sharp CD leg, which typically represents a 1.618 Fibonacci extension of the XA leg.
The main difference between the Crab pattern and the Butterfly pattern is that in the Butterfly pattern, point D sits at the 127.2% Fibonacci extension of the XA leg, and BC retraces to 78.6% of XA.
By contrast, in the Crab pattern, point D sits at the 161.8% extension of the XA leg, and the AB leg ends between 38.2% and 61.8%.
Bullish Crab Pattern
- Point B is a retracement of between 38.2% and 61.8% of the XA leg.
- BC can reach up to 88.6%, with a minimum of 38.2% Fibonacci of the AB leg; point C should not exceed point A.
- CD is the longest leg, and the reversal typically falls between the 161.8% extension of the XA leg and an extension of 224% to 361.8% of the BC leg.
Bullish Crab Pattern
- Point B is a retracement of between 38.2% and 61.8% of the XA leg.
- BC can reach up to 88.6%, with a minimum of 38.2% Fibonacci of the AB leg; point C should not exceed point A.
- CD is the longest leg, and the reversal typically falls between the 161.8% extension of the XA leg and an extension of 224% to 361.8% of the BC leg.
It’s always best to wait until point D fully forms. If price starts to reverse, that reversal can be very large and fast.
Butterfly Pattern Trading Strategy
Always wait for the reversal at point D, and use reversal candles from that zone as an entry signal before opening your trade.
Taking Profits
First target at 61.8% of the CD leg. For the following targets, use levels X, A, C, and B as support levels in a sell scenario, or resistance levels in a buy scenario.
The chart above shows an example of a bullish Crab pattern. It’s easy to identify by looking at the D leg, which clearly extends beyond the lower boundary of the X leg.
After identifying the pattern, you can enter a buy trade once price breaks above the high formed at the D leg. Entry can also be confirmed by watching for a possible Japanese candlestick pattern.
From there, set a first target at 61.8% of the CD leg, followed by a second target at 127.2% of the CD leg.
Stop-Loss
Set your stop-loss according to risk management rules.
Finally, Carney considers the Crab pattern one of the more accurate harmonic patterns, since it tends to produce reversals very close to its Fibonacci reversal zones. This pattern is similar to the Butterfly pattern but differs in its measurements, and as with other harmonic patterns, entry is taken from the precisely defined reversal zone, with the stop-loss placed outside the boundaries of that zone.
Read more:
- AB=CD Pattern: One of the Best Harmonic ABCD Patterns
- Gartley Pattern | Rules, Ratios, and Trading Method Explained
- Bat Pattern: One of the Best Harmonic Patterns
Frequently Asked Questions
What is the Crab pattern?
The Crab is a reversal pattern that lets you enter the market at extreme highs or lows. Like the Butterfly pattern, it can help you identify when the current price move is likely nearing its end — meaning you can enter the market right as price reverses direction.
What is harmonic trading?
Harmonic trading is based on the idea that trends are a harmonic phenomenon, meaning they can be broken down into smaller or larger waves that traders use to estimate potential price direction. Harmonic trading relies on Fibonacci numbers, which are used to build technical indicators.
How do you trade the Crab pattern?
To trade a bearish Crab pattern, place your sell order at point D (the 161.8% Fibonacci extension of the XA leg), place your stop-loss just above point D, and set your profit target at point A or point B.
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Disclaimer: This article is for educational purposes only and does not constitute investment advice. Harmonic patterns like the Crab are analytical tools, not guarantees — the Fibonacci reversal zones they identify can fail, and past performance is not a reliable indicator of future results. Trading forex and CFDs with leverage carries a high level of risk and may not be suitable for all investors; you can lose more than your initial deposit. This page may contain affiliate links, and Easy Trade may earn a commission if you sign up through them, at no extra cost to you.
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