Publicly-traded Deutsche Boerse Group (“DBG”), with headquarters in Frankfurt, is a leading global operators of exchanges, including the Frankfurt Stock Exchange. Its services include equities and derivatives trading, clearing and settlement of orders, custody of securities, and the provision of massive amounts of data. DBG maintains the well-known DAX® index, among many others. Eurex Group, a DBG subsidiary, is made up of six companies in the derivatives business — Eurex Exchange (the largest derivatives exchange in Europe), Eurex Clearing, the …