Double Bottom
The Double Bottom is a bullish reversal pattern featuring two troughs at approximately the same price level, connected by a peak (neckline). Often called the "W pattern" due to its shape, traders watch for neckline breaks as entry signals for long positions.
⚠️ Risk Note: Chart patterns are probabilistic. False breakouts happen. Always define your entry trigger, invalidation, and position size before placing a trade.
📑 Quick Navigation
What is the Double Bottom?
The Double Bottom is a bullish reversal pattern that forms after a downtrend. It consists of two consecutive troughs at approximately the same price level, separated by a peak (rally). The shape resembles the letter "W," which is why it's often called the "W pattern."
The pattern signals that sellers tried to push price lower twice but failed at the same support zone. When the neckline (the resistance level at the peak) breaks, it confirms the reversal and suggests upside momentum.
💡 Key Idea
The two failed attempts to break support show weakening bearish momentum. The neckline break confirms that buyers have taken control.
How to Identify the Pattern
- Prior downtrend – The pattern forms after a sustained downward move (this is a reversal pattern).
- First trough – Price falls to a new low, then bounces.
- Peak – The bounce forms a resistance level (the neckline).
- Second trough – Price falls again to approximately the same level as the first trough, then bounces.
- Neckline break – Price breaks above the peak level, confirming the pattern.
- Volume – Often increases on the second bounce and expands further on the neckline break.
✅ Quality Checklist
Clear prior downtrend, two troughs at similar levels, identifiable neckline at the peak, and a decisive close above the neckline with follow-through.
How Traders Use the Pattern
1) Neckline Break + Confirmation
Many traders wait for a close above the neckline plus follow-through. Some wait for a retest of the neckline from above (now acting as support) before entering long.
2) Invalidation
Common invalidation is a close back below the neckline after breakout, or price breaking below the double bottom lows.
3) Targets and Risk
The classic target is a measured move: the distance from the troughs to the neckline, projected upward from the neckline break point. Also consider nearby resistance levels. Size positions so the stop distance fits your risk limit.
⚠️ Common Mistakes
- No prior downtrend – The pattern requires a preceding downtrend to reverse.
- Trading before neckline break – Anticipating the breakout before confirmation leads to false signals.
- Troughs too far apart – If the time between troughs is excessive, the pattern loses significance.
- No invalidation – You must know where you are wrong before entering.
- Ignoring context – Consider the broader trend and key support/resistance levels.
✅ Quick Checkpoint
Try answering before expanding the model answers.
1) What prior condition is required for a valid Double Bottom?
A prior downtrend. The pattern is a bullish reversal, so it needs something to reverse. Without a downtrend, it's not valid.
2) Why is the Double Bottom called a "W pattern"?
The two troughs with a peak in between resemble the letter "W" when viewed on a chart. This makes it easy to spot visually.
❓ Frequently Asked Questions
Why is it called a "W" pattern?
The two troughs with a peak in between resemble the letter "W" when viewed on a chart. This makes it easy to spot visually.
Do the two troughs need to be exactly the same depth?
No, the troughs don't need to be identical. They should be at approximately the same level—within a few percent is generally acceptable. Perfect symmetry is rare in real markets.
What is the typical target?
A common method is the measured move: the distance from the troughs to the neckline, projected upward from the neckline break point. Also consider nearby resistance levels.
What is the bearish equivalent of the Double Bottom?
The Double Top, which forms after an uptrend with two peaks at similar levels. It signals a bearish reversal when the neckline breaks downward.
📋 Summary
The Double Bottom is a bullish reversal pattern with two troughs at approximately the same level, connected by a peak (neckline). Traders wait for neckline breaks as long entry signals and use measured moves for targets. The pattern requires a prior downtrend to be valid. Always define invalidation and manage position size.
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