Portfolio Rebalance Methods: Explore and implement diverse rebalancing strategies, including Static Weights, Equal Weights, Risk Parity, and Markowitz, to optimize and fine-tune your investment portfolios.

This repository contains Python scripts for portfolio analysis with various rebalancing methods. The primary script, portfolio_rebalancer.py, computes portfolio metrics based on synchronized asset time series data, while the secondary script, main.py, demonstrates its usage with example data.

• Python 3.10.9
• Pandas library 2.0.1

The main.py script serves as an example of how to use the portfolio_rebalancer script with sample data.

To use the portfolio rebalancer, create an instance of the PortfolioRebalancer class and specify the required parameters. The following example demonstrates how to use it:

1. Read asset time series data from a CSV file.
2. Define needed parameters.
3. Specify the weights type (risk parity or static).
4. Create a PortfolioRebalancer instance.
5. Calculate portfolio metrics.
6. Save results to CSV files.
7. Print the results.

import pandas as pd
from portfolio_rebalancer import PortfolioRebalancer

if __name__ == "__main__":
    # Read asset time series data from CSV
    asset_ts = pd.read_csv('data/example-data.csv', index_col=0, parse_dates=['timestamp'])

    # Define initial allocation weights and rebalance frequency
    allocation = [0.333, 0.333, 0.334]
    reb_freq = 'Q'
    
    # Specify weights type
    weights_type = 'static'  # Change this to 'risk_parity' if needed

    # Create PortfolioRebalancer instance
    rebalancer = PortfolioRebalancer(asset_prices=asset_ts, weights_type=weights_type, rebalance_frequency=reb_freq, static_weights=allocation)

    # Calculate portfolio metrics
    result_equity, result_allocations = rebalancer.calculate_portfolio()

    # Save results to CSV files with weights type in filenames
    equity_filename = f'equity_{weights_type}.csv'
    allocations_filename = f'allocations_{weights_type}.csv'
    
    result_equity.to_csv(equity_filename, sep=';')
    result_allocations.to_csv(allocations_filename, sep=';')

    # Print results
    print("Cumulative Equity:")
    print(result_equity)

    print("\nAsset Allocations:")
    print(result_allocations)

Initialize PortfolioRebalancer.

• asset_prices (pd.DataFrame): A DataFrame with synchronized asset prices over time.
• weights_type (Literal['risk_parity', 'static']): The type of weights to use ('risk_parity' or 'static').
• rebalance_frequency (str): The rebalancing frequency as a pandas frequency string (e.g., 'Q' for quarterly, 'M' for monthly).
• static_weights (Optional[List[float]]): A list of static weights for each asset. If not provided and weights_type is 'static', it defaults to equal weights.
• start_deposit (float): The initial deposit or starting amount for the portfolio.

Calculate allocation weights based on the specified type.

Returns:

• pd.Series[float]: A Pandas Series of weights for each asset.

Calculate portfolio metrics based on synchronized asset time series data using specified parameters.

Returns:

• Tuple[pd.DataFrame, pd.DataFrame]:
  • equity: DataFrame with cumulative equity.
  • asset_allocations: DataFrame with daily asset allocations.

This project is licensed under the MIT License. See the LICENSE file for details.