# Article 17 — Methodology, date of publication and date of application of the transparency calculations (Article 22(1) of Regulation (EU) No 600/2014) **Commission Delegated Regulation (EU) 2017/587 · binding · OJ L 87, 31.3.2017 · dated 14 Jul 2016 [in force]** *In force · Consolidated version of 2 March 2026 · Checked against EUR-Lex on 26 Oct 2026 · [Official source](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02017R0587-20260302)* 1. By 1 March of each year after the date of application of this Regulation, competent authorities and ESMA shall, in relation to each financial instrument for which they are the competent authority, collect the data, calculate and ensure the publication of the following: **(a)** the trading venue which is the most relevant market in terms of liquidity as set out in Article 4(2); **(b)** the average daily turnover for the purpose of identifying the size of orders that are large in scale as set out in Article 7(3); **(c)** the average value of transactions to determine the standard market size set out in Article 11(2) and the thresholds set out in Articles 11a and 11b. 2. Competent authorities, market operators, and investment firms, including investment firms operating a trading venue, shall use the information published in accordance with paragraph 1 for the purposes of Article 4(1), points (a) and (c), and Article 14(2), (3) and (4) of Regulation (EU) No 600/2014, for the period between the first Monday of April of the year in which the information is published and the day before the first Monday of April of the subsequent year. 3. Competent authorities shall ensure that the information to be made public pursuant to paragraph 1 is updated on a regular basis for the purposes of Regulation (EU) No 600/2014 and that all changes to a specific share, depositary receipt, ETF, certificate or other similar financial instrument which significantly affects the previous calculations and the published information are included in such updates. 4. For the purposes of the calculations referred to in paragraph 1, the turnover in relation to a financial instrument shall be calculated by summing the results of multiplying, for each transaction executed during a defined period of time, the number of units of that instrument exchanged between the buyers and sellers by the unit price applicable to such transaction. 5. After the end of the trading day, but before the end of the day, trading venues shall submit to competent authorities the details set out in Tables 1 and 2 of Annex III whenever the financial instrument is admitted to trading or first traded on that trading venue or whenever those previously submitted details have changed. 6. Where ESMA or competent authorities require information in accordance with Article 22 of Regulation (EU) No 600/2014 trading venues, APAs and CTPs shall provide such information in accordance with Annex IV to this Regulation. 7. Where the trade size determined for the purposes of Article 7(1) and (2), Article 8(2), point (a), Article 11(1), Articles 11a and 11b, and Article 15(1) is expressed in monetary value and the financial instrument is not denominated in euro, the trade size shall be converted to the currency in which the financial instrument is denominated by applying the European Central Bank euro foreign exchange reference rate as of 31 December of the preceding year.