This monograph addresses the questions of where the legal trend in the law of capital markets will lead, how the specifications of the MiFID can be implemented in German law, and how an optimal arrangement of the regulation for alternative trading systems could appear. In comparing the law with the US American provisions, the requirements of the MiFID as well as the exchange statute are analysed with the goal of making recommendations for a practicable implementation of the guidelines in German law and for the creation of effective exchange law regulations for over-the-counter securities trading systems as well. At the same time, the point is also to determine which mandatory requirements the policy includes, and what room it leaves for a national configuration on the other hand.