1.In order to carry out calculations for determining the requirements for the pre-and post-trade transparency and the trading obligation regimes referred to in Articles 3 to 11a, 14 to 21 and 32 which are applicable to financial instruments, and in order to prepare reports to the Commission in accordance with Article 4(4), Article 7(1), Article 9(2), Article 11(3) and Article 11a(1), ESMA and competent authorities may require information from:

(a) trading venues;

(b) APAs; and

(c) CTPs.

2. Trading venues, APAs and CTPs shall store the necessary data for a sufficient period.