Coppock Curve Node
Long-term Momentum Reversal Indicator
Overview
The Coppock Curve is a specialized momentum indicator designed specifically for identifying major market bottoms and long-term reversal points. Created by Edwin "Ted" Coppock in the 1960s, it combines the weighted rate of change with an exponential moving average to create a smooth, reliable signal for term investors looking to enter at significant market lows.
Unlike more responsive momentum indicators, the Coppock Curve excels at capturing turning points in long-term trends. It's particularly effective in bear markets, providing clear buy signals when bottoms form. The indicator rarely generates false signals due to its smoothing, making it especially valued by position traders and long-term investors who prioritize accuracy over frequency of signals.
Formula
Coppock Curve combines rate of change momentum with exponential averaging:
The combination of multiple ROC periods creates robustness, while the EMA smoothing ensures you see major trends without getting distracted by noise. The beauty of Coppock Curve is that it's simple to understand but powerful in identifying significant turning points.
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
| roc1 | number | 11 | First ROC period. Standard is 11. |
| roc2 | number | 14 | Second ROC period. Standard is 14. |
| emaPeriod | number | 13 | EMA smoothing period. Standard is 13. |
| source | Node | Auto | The root data source node. Automatically detected from connected nodes. |
💡 Tip: The standard Coppock Curve parameters are well-optimized for identifying major market bottoms. Change them cautiously - the defaults are based on decades of testing. For margin calls or shorter timeframes, you might use ROC(5,7) with EMA(10), but expect more false signals.
Common Use Cases
1. Bear Market Bottom Identification
The Coppock Curve was specifically designed for this purpose. During bear markets, watch for the indicator to reach its lowest point and cross above zero - this signals the bottom is likely in. Combined with price forming a double bottom or V-shape pattern, this provides high-confidence entries at major turning points with excellent risk/reward ratios.
2. Intermediate-Term Trend Confirmation
Use Coppock Curve to confirm that an uptrend is healthy and sustainable. When the curve is above zero and rising, the intermediate trend is firmly bullish. When it starts rolling over from highs, even if price hasn't declined yet, it's a warning that momentum is dying and a correction may be coming. Filter false signals by requiring price confirmation.
3. Divergence Analysis
Track divergences between price and Coppock Curve. Bullish divergence (price down, indicator up from lower lows) often precedes fast reversals. Bearish divergence (price up, indicator down from lower highs) signals momentum failure. Due to the indicator's slow nature, these divergences set up major moves, often worth 5-20% swings.
4. Position Sizing and Portfolio Rebalancing
Use Coppock Curve to time allocation decisions. When the curve is rising from new lows, increase equity exposure. When it's falling from highs or below zero, reduce equity exposure or prepare cash. This mechanical approach to portfolio management aligns capital allocation with genuine market reversals rather than guesswork.
Advantages & Limitations
Advantages
- •Specifically designed for identifying major market bottoms
- •Very few false signals due to heavy smoothing
- •Excellent for long-term investors and portfolio managers
- •Divergences are reliable and well-established
- •Handles gaps and overnight moves well
- •Works across all asset classes and timeframes
Limitations
- •Requires substantial price decline to generate signals
- •Slow indicator - signals come late in moves
- •Doesn't work well for short-term or day trading
- •Few signals mean smaller sample size for testing
- •Ineffective in ranging sideways markets - needs volatility
- •Long false starts possible if market forms rounded bottom
Tips & Best Practices
💡 Watch for Zero Crossover on Lowest Points
The most powerful Coppock Curve signal occurs when it's near its all-time low (or recent 2-3 year low) and crosses above zero. This is the "buy the dip" setup. The lower the prior trough, the more meaningful the zero crossover. Wait for this alignment rather than every zero cross-above.
📊 Combine with Price Patterns
Don't act on Coppock Curve signals in isolation. The best setups occur when the indicator crosses zero while price forms a V-bottom, double bottom, or breaks a downtrend line. This combination significantly improves accuracy and reduces false signal risk.
⚡ Use Higher Timeframes
Coppock Curve is most effective on daily, weekly, or monthly charts. On intraday (1-hour or shorter) charts, disable it - the smoothing creates excessive lag. If you must use intraday, reserve it only for confirming your main market bias, not as a primary entry signal.
⚠️ Patient Capital Required
Coppock Curve rewards patience. You may see no trades for months, then get a powerful multi-month entry signal. Accept that this indicator is not for active traders. It's for people willing to wait for high-probability setups at market turning points.
Example Strategy
Here's a proven Coppock Curve bottom-hunting strategy for long-term investors:
Coppock Curve Bottom Hunter Strategy
1Setup
- →Daily or weekly chart of your target stock/fund
- →Add Coppock Curve with default parameters
- →Identify support levels and recent swing lows
2Waiting Phase
- →Watch for market weakness and Coppock Curve decline
- →Monitor for curve reaching 2-3 year lows - bottom forms
- →Note when price forms double bottom or V-shape
3Entry Signal
- →Trigger: Coppock Curve crosses above zero
- →Confirmation: Price breaks above resistance from pattern
- →Enter long position at market or limit order at breakout level
4Position Management
- →Stop loss: Below the recent swing low by 2-3%
- →Hold for 6-12 months minimum - let the trend develop
- →Exit: When Coppock Curve crosses below zero or peaks and rolls
Related Nodes
ROC (Rate of Change)
Base component of Coppock Curve. ROC values are combined to form the curve.
EMA (Exponential Moving Average)
Smoothing component. Used to filter noise from ROC combination.
RSI (Relative Strength Index)
Complementary momentum oscillator. Both identify bottoms differently.
SMA (Simple Moving Average)
Better for identifying support/resistance levels at bottoms.