quant-trading-backtrader

A comprehensive skill for building, backtesting, and optimizing quantitative trading strategies using the Backtrader framework in Python.

Features

• Backtesting Engine: Simulates trading strategies on historical data with support for multiple data feeds.
• Strategy Development: Provides a structured Strategy class to define indicators (SMA, EMA, RSI, etc.) and trading logic.
• Risk Management: Examples of implementing stop-loss, take-profit, and position sizing (e.g., fractional Kelly).
• Data Handling: Support for CSV data ingestion (customizable formats) and pandas DataFrame integration.
• Reporting: Generates transaction logs, trade analysis (PNL), and portfolio value tracking.

Usage

This skill provides a foundation for creating quantitative trading bots. It includes templates and examples to get you started.

1. Installation

Ensure you have the required dependencies:

pip install backtrader matplotlib

2. Basic Strategy Template

Create a new strategy file (e.g., my_strategy.py) using the template structure:

import backtrader as bt

class MyStrategy(bt.Strategy):
    params = (
        ('period', 15),
    )

    def __init__(self):
        self.sma = bt.indicators.SimpleMovingAverage(self.data.close, period=self.params.period)

    def next(self):
        if self.sma > self.data.close:
            # Do something
            pass

3. Running a Backtest

Use bt.Cerebro to orchestrate the backtest:

cerebro = bt.Cerebro()
cerebro.addstrategy(MyStrategy)
# ... add data ...
cerebro.run()

Examples

Check the examples/ directory for full working examples:

• sma_crossover.py: A classic Trend Following strategy with Stop-Loss.

Best Practices

• Avoid Overfitting: Use Walk-Forward Analysis (train on past, test on unseen future data).
• Risk Control: Always implement stop-loss orders. Position sizing is critical for survival.
• Data Quality: Ensure your historical data is clean and representative.