SIX is compliant with the International Organization of Securities Commission (IOSCO) "Principles for Financial Benchmarks".
Within the framework of the BMR Regulation, the SIX Swiss Oversight Function reviews both the validity of the index concepts and rules and the potential settings of indices. In the event of significant changes, a broad market consultation is carried out. Changes to the index rules are here publicly announced with an appropriate reasonable lead time (usually 3 months).