1.For the purpose of carrying out calculations that occur at pre-set dates or in pre-defined frequencies, trading venues, APAs and CTPs shall provide their competent authorities with all the data required to perform the calculations set out in the following Regulations:
(a)Delegated Regulation (EU) 2017/587;
(b)Delegated Regulation (EU) 2017/583;
(c)Delegated Regulation (EU) 2017/567;
(d)Delegated Regulation (EU) 2017/565.
2.Competent authorities may request, where necessary, additional information for the purpose of monitoring and adjusting the thresholds and parameters referred to in points (a) to (f) and (h) of Article 1 from trading venues, APAs and CTPs.
3.Competent authorities may request all the data ESMA is required to take into consideration in accordance with Delegated Regulation (EU) 2016/2020 for non-equity financial instruments, including data on the following:
(a)the average frequency of trades;
(b)the average size and distribution of trades;
(c)the number and type of market participants;
(d)the average size of spreads.