1. Without prejudice to the allocation of responsibilities for enforcing the provisions of Directive 2003/6/EC of the European Parliament and of the Council of 28 January 2003 on insider dealing and market manipulation (market abuse) [OJ L 96, 12.4.2003, p. 16.], Member States coordinated by ESMA in accordance with Article 31 of Regulation (EU) No 1095/2010 shall ensure that appropriate measures are in place to enable the competent authority to monitor the activities of investment firms to ensure that they act honestly, fairly and professionally and in a manner which promotes the integrity of the market.
2. Member States shall require investment firms to keep at the disposal of the competent authority, for at least 5 years, the relevant data relating to all transactions in financial instruments which they have carried out, whether on own account or on behalf of a client. In the case of transactions carried out on behalf of clients, the records shall contain all the information and