In this chapter, we examined various means of performing the analysis of stock and index data. We started with loading historical quotes from Yahoo! Finance, moved on to how to create various visualizations for this data, and then to performing various financial analyses that are common for analyzing stock market data.

We focused in this chapter purely upon the analysis of historical data. We neither made any attempts to use this data to predict the future and to make decisions on trade execution, nor did we look at the management of portfolios, where historical data can be used to calculate optimal portfolios. We will come to both of these chapters later in the book, where the techniques in this chapter will be leveraged to help with those concepts.