Definition
As a downtrend matures, selling becomes aggressive and volatile. Price swings widen as fear dominates. Over time, volatility begins to contract as sellers lose strength and institutions quietly accumulate positions. This shift from expansion to contraction reflects stabilization. When price breaks above the upper boundary of the diamond, it confirms that buyers have taken control and a new uptrend is underway.
Simple Explanation
"It looks like a diamond at the bottom of a chart. It combines a "Megaphone" (expansion) and a "Triangle" (contraction). It shows the market calming down after a panic before shooting up."
Core Message
- Extreme volatility often appears near market bottoms
- Selling pressure weakens gradually
- Accumulation replaces panic selling
- Breakout confirms bullish trend reversal
Visual Interpretation
Expansion
Price makes lower lows and higher highs (Broadening bottom).
Transition
Volatility peaks, selling exhaustion.
Contraction
Price marks higher lows and lower highs (Symmetrical triangle).
Breakout
Price breaks the diagonal resistance of the contracting phase.
Summary
"Visually, the Diamond Bottom resembles a symmetrical or tilted diamond. The key insight is volatility exhaustion followed by stabilization."
Market Psychology
Capitulation
- Fear dominates. Sellers push prices lower aggressively.
Panic Volatility
- Wide price swings reflect emotional exits and forced liquidation.
Accumulation
- Strong hands quietly absorb supply as volatility contracts.
Resolution
- Resistance breaks, confidence returns, and a sustained uptrend begins.
Identification Rules
Prior Trend
A clear downtrend must exist.
Expansion
Price must form a broadening structure first.
Contraction
Price must narrow after the expansion phase.
Shape
The diamond shape should be visually clear.
Breakout
Breakout above resistance confirms the reversal.
Execution Strategy
Entry Signal
Buy on breakout
Stop Loss
Stop loss below bottom
Take Profit
Target height of diamond mapped up
Signal Confirmation
Is the bottom in?
- Strong bullish candle closing above resistance
- Expansion in volume on breakout
- Price holding above the diamond structure
- Higher highs and higher lows after breakout
Caution: Buying too early inside the diamond is dangerous. The trend is still effectively down until the break.
Common Mistakes
Myth: Diamond Bottoms form frequently
They are rare but significant when they appear.
Myth: It is just a broadening wedge
No, the contraction phase is the key differentiator.
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Essential Reading
