Deutsche Börse AG or the Deutsche Börse Group, is a marketplace organizer for the trading of shares and other securities. It is also a transaction services provider. It gives companies and investors access to global capital markets. It is a joint stock company and was founded in 1993. The headquarters are in Frankfurt. As of December 2010, the over 765 companies listed had a combined market capitalization of EUR 1.4 trillion. On 1 October 2014, Deutsche Börse AG became the 14th announced member of the United Nations Sustainable Stock Exchanges initiative.