The HDAX Index is a total rate of return index of the 110 most highly capitalized stocks traded on the Frankfurt Stock Exchange. The HDAX has a base value of 500 as of December 31, 1987. As of June 18, 1999 only XETRA equity prices are used to calculate all DAX indices. All history from this data & prior uses floor traded equity prices. Successor to the DAX 100 Index.