(4)As the determination of the scope of the permission to trade during closed periods, the identification of trading venues with a significant cross-border dimension, and the revised indicators of market manipulation seek to enhance the effectiveness of the market abuse framework, notably by strengthening the competent authorities’ abilities to identify and enforce cases of market abuse, this Regulation lays downs provisions based on the mandates set out in Article 12(5), Article 19(13), and Article 25a(7) of Regulation (EU) No 596/2014.