The Dow Jones Industrial Average (DJIA), or simply the Dow (/ˈdaʊ/), is a stock market index that measures the stock performance of 30 large companies listed on stock exchanges in the United States. Although it is one of the most commonly followed equity indices, since it only includes 30 companies and is not weighted by market capitalization and is not a weighted arithmetic mean, many consider the Dow to not be a good representation of the U.S. stock market and consider the S&P 500 Index, which also includes the 30 components of the Dow, to be a better representation of the U.S. stock market. The value of the index is sum of the price of one share of stock for each component company divided by a factor which changes whenever one of the component stocks has a stock split or stock dividend, so as to generate a consistent value for the index. Since the divisor is currently around 0.1474, the value of the index is 6.7843 times larger than the sum of the component prices. It is the second-oldest U.S. market index after the Dow Jones Transportation Average, created by The Wall Street Journal editor and Dow Jones & Company co-founder Charles Dow. It is the best known of the Dow Averages, of which the first (non-industrial) was originally published on February 16, 1885. The averages are named after Dow and one of his business associates, statistician Edward Jones. The industrial average was first calculated on May 26, 1896. The Industrial portion of the name is largely historical, as many of the modern 30 components have little or nothing to do with traditional heavy industry. The index is maintained by S&P Dow Jones Indices, a joint venture majority-owned by S&P Global and its components are selected by a committee. The ten components of the index with the highest dividend yields are referred to as the Dogs of the Dow.