Despite its growing practical importance, private self-regulation in capital market law has come under increasing criticism in the recent past. Christiane Wahler's research interests focus on the question of how this form of control can be improved. It clarifies the conceptual bases and explores the limits of this form of regulation. The advantages and disadvantages are examined with regard to the existing tension in order to identify optimization approaches based on the results obtained. In particular, the advantages of factual proximity and acceptance can be used in a variety of ways. The proceduralization is also proving to be helpful to compensate for existing deficits in the rule of law and to increase the actors' orientation towards the common good. A combination of liberal approaches and accompanying state measures is essential for the success of this form of law.