The Dow Jones industrial average and its 30 components

The Dow Jones Industrial Average (DJIA) is a stock market index that comprises the 30 largest US companies. Commonly known as the Dow, it is owned by S&P Dow Jones Indices LLC and computed on a price-weighted basis (see https://us.spindices.com/index-family/us-equity/dow-jones-averages for more information on the Dow).

This section involves downloading the datasets of Dow and its components into pandas DataFrame objects for use in later sections of this chapter.

Downloading Dow component datasets from Quandl

The following code retrieves the Dow component datasets from Quandl. The data provider that we will be using is WIKI Prices, a community formed by members...