How to do a mean-reversing strategy in Python

1 min

A mean-reverting strategy is a trading strategy that aims to exploit the tendency of prices to move back toward the mean or average of a given data set. The basic idea is to buy an asset when its price is below its historical average and to sell it when its price is above its historical average.

This strategy is based on the assumption that prices will eventually revert to their mean, and thus, it aims to profit from the difference between the current price and the historical average.

To implement a mean-reverting strategy in Python, you will need to use a library for financial data analysis such as Pandas. Here is an example of a simple mean-reverting strategy using the Pandas library:

import pandas as pd
import numpy as np

# Load historical data for the asset you want to trade
data = pd.read_csv("asset_data.csv")

# Calculate the historical average of the asset's price
mean = data["price"].mean()

# Create a new column that shows whether the asset's price is above or below the historical average
data["position"] = np.where(data["price"] > mean, 1, -1)

# Use the position column to make buy or sell decisions
for i in range(len(data)):
    if data.loc[i, "position"] == 1:
        print("Sell at", data.loc[i, "price"])
    elif data.loc[i, "position"] == -1:
        print("Buy at", data.loc[i, "price"])

Please note that this is a very basic example, and in real-world scenarios, you would have to consider various factors such as volatility, risk management, stop-losses and other important trading strategies.

Additionally, you would also need to backtest your strategy on historical data to check its performance, before applying it to live trading.