what is the deutsche b rse group 
the deutsche b rse group owns and operates all seven stock exchanges in germany the largest of which is the frankfurt stock exchange since 1997 the frankfurt stock exchange has used a completely electronic trading platform called xetra which was developed by the deutsche b rse group and has since been adopted by several other european exchanges the deutsche b rse group has approximately 600 companies listed with a combined domestic market capitalization of over 1 7 billion since 2014 it has been a member of the u n sustainable stock exchanges initiative the deutsche b rse group oversees the german stock exchanges and is regulated by the european securities and markets authority the federal financial supervisory authority and the trading surveillance office 