Step 1: Load the Data

First, we'll use pandas to load the CSV file. Ensure your CSV file has at least two columns: Date and Close, where Date represents the trading date and Close represents the closing price of the stock on that day. We also need to ensure that the data is correctly sorted by date, especially when working with time series data like stock prices. This step is essential to maintain the chronological order of the data, which affects calculations of returns, moving averages, and other time-series analyses.