Index roundup: Dax turns 30, remains top underlying

Dax, Deutsche Börse's most important selection index, is celebrating its 30th birthday this week. The Dax index is one of the most popular underlying for financial products in the world. There are 17 exchange-traded funds (ETFs) tracking the Dax, which have total assets under management of more than €17 billion. Dax futures and options are also among the most popular derivatives. In 2017, the trading volume reached 21.5 million contracts, which was equivalent to a trading turnover of €6.7 billi