Various ways of measuring the trend of securities prices, one of the most popular of which is the Dow Jones Industrial Average of 30 industrial stocks listed on the New York Stock Exchange. The prices of the 30 stocks are totaled and then divided by a divisor that is intended to compensate for past stock splits and stock dividends, and that is changed from time to time. As a result, point changes in the average have only the vaguest relationship to dollar-price changes in stocks included in the average.