Article 4 2.

The authorities competent for the supervision of the trading venues, including the competent authorities designated in accordance with Article 21(1) of Directive 2003/71/EC of the European Parliament and of the Council ( 2 ), shall ensure that the first subparagraph of Article 3(2) of this Regulation is applied where the securities referred to in Article 3(1) of this Regulation are traded on trading venues.