1. What is important in Double Bottom Pattern?
- Structure: It looks like the letter “W” — two distinct troughs at roughly the same price level, separated by a moderate peak.
- Bullish Signal: It indicates that after testing support twice, sellers failed to push prices lower, and buyers are regaining control.
- Breakout Point: The bullish confirmation comes when the price breaks above the peak between the two bottoms (the neckline).
- Psychology: It reflects market exhaustion on the downside and renewed buying interest, making it a classic reversal signal.
2. Who Invented or Used It First?
Historical Roots:
The Double Bottom pattern is part of classical chart patterns studied since the early 20th century.
Early Contributor / Analyst:
The pattern was documented and analyzed by
Richard W. Schabacker
One of the earliest analysts to formalize chart patterns
Further Development & Standardization:
Robert D. Edwards and John Magee
They expanded and standardized patterns like Double Bottom
Modern Analysts:
Popularized classical charting in modern markets
No Single Inventor:
The Double Bottom pattern evolved naturally from repeated market observations rather than being invented by one individual.
3. How Much Did They Invest & Profit Using This Pattern?
Important Reality: There is no publicly available data showing exact investment amounts or profits specifically from Double Bottom trades. This pattern is always used as part of a broader strategy.
Richard W. Schabacker
Primarily an analyst and writer
No public record of trade-level profits
Contribution: foundation of chart pattern theory
Jesse Livermore
Used similar reversal and accumulation strategies
Earned and lost millions of dollars during his career
Not specific to Double Bottom, but conceptually aligned
John J. Murphy
Focused on market education rather than publishing personal trade profits
Helped traders apply patterns like Double Bottom effectively
4. Key Insight
Double Bottom is reliable but not guaranteed
Works best when combined with:
- Volume confirmation
- Trend reversal signals
- Support/resistance validation
Professional traders treat it as one confirmation tool, not a standalone strategy
5. Profitability & Use in Trading
- Traders’ Success: Many traders have profited by spotting major bottoms with this pattern, especially in stocks and commodities.
- Institutions & Individuals: It became a staple in technical analysis, used to identify potential reversals after prolonged downtrends.
- Profit Potential: When confirmed with volume and broader market context, it often precedes strong bullish rallies.
6. Why It became Famous?
- Reliability: Considered one of the most dependable reversal patterns.
- Simplicity: Easy to recognize visually, even for beginners.
- Educational Spread: Featured in nearly every technical analysis textbook and trading course.
- Market Psychology: It captures the battle between buyers and sellers, showing failed attempts to break support.
- Broad Application: Works across stocks, forex, crypto, and commodities, making it universally useful.
Quick Recap
- Key Idea: Signals a bullish reversal after testing support twice.
- Origin: Documented by Schabacker and Edwards & Magee.
- Profitability: Yes, widely used by traders to capture reversals.
- Fame: Reliability, simplicity, and strong psychological basis made it a cornerstone of chart analysis.
1. Pattern Overview
Pattern Type
Bullish Reversal Pattern
Professional Definition
The Double Bottom is a bullish reversal chart pattern that forms after a sustained downtrend. It consists of two consecutive troughs at approximately the same price level, separated by a moderate peak. A breakout above the intervening peak (resistance) confirms the reversal and signals the potential start of a new uptrend.
Market Psychology
- First Bottom: Sellers dominate, driving prices lower. Buyers step in, creating temporary support.
- Intervening Peak: Price rebounds as bargain hunters and short covering lift the market, but sellers resist at resistance.
- Second Bottom: Sellers attempt another decline, but buyers defend the same support level, showing strength and accumulation.
- Breakout: Buyers overpower sellers, breaking resistance and shifting sentiment to bullish.
Statistical Success Rate
According to Thomas Bulkowski’s Encyclopedia of Chart Patterns, the Double Bottom pattern has a success rate of approximately 78% for upward breakouts.
Average Price Move After Breakout
The projected move is typically equal to the pattern height (distance from resistance to support). Average gains range from 15–25% in trending markets.
Ideal Market Conditions
- Appears after a prolonged downtrend
- Performs best in moderate volatility environments
- Strong momentum markets enhance reliability
Comparison With Similar Patterns
- Versus Double Top: Double Bottom is bullish, while Double Top is bearish.
- Versus Inverse Head and Shoulders: Double Bottom has two troughs, while inverse head and shoulders has three.
- Versus Rounded Bottoms: Rounded bottoms are gradual reversals; double bottoms are more structured.
2. Step-by-Step Formation Structure
Required Prior Trend
A clear downtrend must precede the pattern.
Stage-by-Stage Development
- Initial decline forms the first bottom
- Recovery to resistance (intervening peak)
- Second decline forms the second bottom near the same support level
- Breakout above resistance completes the pattern
Support Level Formation
Support is established at the troughs of the two bottoms.
Resistance Level Formation
Resistance forms at the intervening peak between the two bottoms.
Trendline Drawing Rules
- Draw a horizontal line across the troughs (support).
- Draw a horizontal line across the intervening peak (resistance).
Minimum Pattern Requirements
- Two distinct troughs at similar price levels
- Intervening peak between troughs
- Resistance line with at least two touches
Volume Behavior During Formation
- Volume decreases during the first bottom
- Light trading during the second bottom
- Volume expansion expected at breakout
3. Breakout Structure
Exact Breakout Location
Occurs when price closes above the intervening peak resistance.
Breakout Candle Characteristics
- Strong bullish body
- Close above resistance
- Preferably accompanied by high volume
Confirmation Rules
- Daily close above resistance
- Volume spike
- Follow-through in subsequent sessions
Volume Behavior During Breakout
Expansion confirms strong buying interest and validates breakout reliability.
Trader Signal Interpretation
Breakout signals reversal of the prior downtrend and entry opportunity for traders.
4. Trading Strategy & Mathematical Formulas
Entry Strategy
- Aggressive Entry: Enter immediately after breakout confirmation.
- Conservative Entry: Wait for retest of breakout level (resistance becomes support).
Target Price Calculation
Pattern Height Formula
Pattern Height = Resistance Level − Support Level
Bullish Target Formula
Target Price = Breakout Level + Pattern Height
Stop-Loss Placement
- Bullish Breakout: Below support or second bottom low
Risk–Reward Ratio Formula
Risk–Reward Ratio =
Target Price – Entry Price
Entry Price – Stop Loss
Example Calculation
- Entry Price = 50
- Resistance Level = 50
- Support Level = 40
- Pattern Height = 10
- Target Price = 60
- Stop Loss = 47
Risk–Reward Ratio =
(60 − 50)
(50 − 47)
=
10
3
= 3.3 : 1
5. Volume Analysis Rules
- Volume decreases during first bottom formation
- Contraction continues during second bottom consolidation
- Expansion at breakout confirms strength
- Weak volume breakouts may indicate false signals
6. Key Identification Features
- Two troughs at similar price levels
- Intervening peak between troughs
- Horizontal support and resistance lines
- Trendlines drawn across troughs and peak
Typical Timeframes
- Intraday charts (short-term reversals)
- Swing trading charts (daily)
- Positional trading charts (weekly)
Bullish Nature
The pattern signals reversal of a downtrend, making it inherently bullish.
7. Failure Conditions & Invalidation Rules
- False breakout with weak volume
- Opposite breakout below support
- Early warning: second bottom breaks significantly lower than first
- Invalidation if price fails to hold above resistance after breakout
- Risk management: always use stop-loss placement
8. Common Trader Mistakes
- Entering before breakout confirmation
- Ignoring volume signals
- Confusing with double tops or rounding bottoms
- Placing stop-loss too close to support
- Trading in sideways or weak markets
9. Chart Description
The Double Bottom pattern begins with a downtrend. Price forms a trough (first bottom), then rebounds to resistance (intervening peak). Price declines again, forming a second trough near the same support level. A breakout candle closes above the intervening peak with strong volume. Traders project the target by adding the pattern height to the breakout level. Volume expansion confirms the breakout’s reliability.