 | | A composite index covering price movements of all common stock listed on the Exchange. It is based on the close of the market December 31, 1965 as 50.00 and is weighted according to the number of shares listed for each issue. The index is computed continuously and printed on the ticker tape each half hour. Point changes in the index are converted to dollars and cents so as to provide a meaningful measure of changes in the average price of listed stocks. The composite index is supplemented by separate indexes for four industry groups: industrial, transportation, utility and financial. |
