ABCD Harmonic Pattern Strategy (Bull + Bear)

This script is a strategy implementation of the classic ABCD Harmonic Pattern, designed for market structure analysis, backtesting, and educational research.

The ABCD pattern is one of the foundational harmonic price patterns in technical analysis. Its Fibonacci ratio relationships were formalized and standardized within harmonic trading theory by Scott M. Carney, whose work helped define modern harmonic pattern rules.

This strategy is conceptually inspired by educational ABCD pattern logic shared by the TradingView author theEccentricTrader.
The code, structure, execution logic, filters, and risk management have been independently developed, reconstructed, and extended into a complete TradingView strategy.

What this strategy does

Detects bullish and bearish ABCD harmonic patterns based on price structure and Fibonacci ratios.

Reconstructs ABCD market structure logic for both directions instead of using a simple visual inversion.

Draws the ABCD legs, structure labels (A, B, C, D), and projection levels directly on the chart.

Generates long and short trade entries using confirmed ABCD structures.

Includes optional confluence filters, such as:

Higher-timeframe EMA trend filter

RSI strength filter

ATR volatility filter

Volume confirmation

Candle body confirmation

Minimum bounce distance from point D

Provides built-in risk management, including:

Configurable Stop Loss

Configurable Take Profit

Optional trailing stop

Designed for backtesting, parameter optimization, and analytical research.

Why this strategy is different

This script is not a simple indicator conversion nor a basic bullish/bearish mirror.
The ABCD pattern logic has been recreated at the structural level to better reflect how bullish and bearish market formations behave in real price action.

Key differences

Reconstructed bullish and bearish structures
Bullish and bearish ABCD patterns are independently defined using market structure logic, not just inverted visually.
Each direction has its own pivot relationships and validation rules to produce a more faithful representation of the ABCD pattern.

Structure-aware pattern validation
Pattern confirmation is based on price swings, structure continuity, and Fibonacci alignment, helping reduce distorted or forced patterns.

Strategy-based execution
Unlike indicator-only ABCD tools that only visualize patterns, this script uses strategy.entry and strategy.exit, enabling full backtesting and performance analysis.

Confluence-driven entries
Trade entries can require multiple confirmation layers beyond the pattern itself, helping reduce low-quality signals and overtrading.

Integrated risk management
Stop Loss, Take Profit, and optional trailing logic are applied consistently for both long and short positions.

Non-repainting design
Pattern detection and entries rely on confirmed bars (barstate.isconfirmed) and higher-timeframe data with lookahead_off, ensuring signals do not repaint historically.

Improved and controlled visualization
Pattern drawings, projections, and entry markers are managed with strict object limits to comply with TradingView performance and publishing requirements.

How to use

Add the strategy to a chart and select a symbol and timeframe.

Enable or disable filters under “Entry Filters (Confluence)”.

Configure Stop Loss, Take Profit, and trailing behavior under “TP/SL”.

Use pattern drawings and entry markers as visual and analytical confirmation, not as standalone trade signals.

Important notes

This script is provided for educational and research purposes only.

It does not provide financial or investment advice.

No profitability or performance is implied or guaranteed.

Past performance does not indicate future results.

Always test across multiple markets and timeframes and apply proper risk management.

Credits

ABCD Harmonic Pattern: Harmonic trading principles as formalized by Scott M. Carney.

Conceptual inspiration: Educational ABCD pattern logic shared by theEccentricTrader on TradingView.

Pattern reconstruction, strategy logic, and risk management: Independent development.