Article 48 Systems resilience, circuit breakers and electronic trading
2. Member States shall require a regulated market to have in place:
3. The written agreement referred to in paragraph 2 shall at least specify:
The regulated market shall monitor and enforce compliance by investment firms with the requirements of such binding written agreements. The regulated market shall inform the competent authority about the content of the binding written agreement and shall, upon request, provide all further information to the competent authority necessary to enable the competent authority to satisfy itself of compliance by the regulated market with this paragraph.
Member States shall ensure that a regulated market reports the parameters for halting trading and any material changes to those parameters to the competent authority in a consistent and comparable manner, and that the competent authority shall in turn report them to ESMA. Member States shall require that where a regulated market which is material in terms of liquidity in that financial instrument halts trading, in any Member State, that trading venue has the necessary systems and procedures in place to ensure that it will notify competent authorities in order for them to coordinate a market-wide response and determine whether it is appropriate to halt trading on other venues on which the financial instrument is traded until trading resumes on the original market.
Member States shall require a regulated market to disclose publicly on its website information about the circumstances leading to the halting or constraining of trading and on the principles for establishing the main technical parameters used to do so.
Member States shall ensure that, where a regulated market does not halt or constrain trading as referred to in the first subparagraph, despite the fact that a significant price movement in a financial instrument or related financial instruments has led to disorderly trading conditions on one or several markets, competent authorities are able to take appropriate measures to re-establish the normal functioning of the markets, including using the supervisory powers referred to in Article 69(2), points (m) to (p).
6. Member States shall require a regulated market to have in place effective systems, procedures and arrangements, including requiring members or participants to carry out appropriate testing of algorithms and providing environments to facilitate such testing in accordance with the requirements laid down in Chapters II and IV of Regulation (EU) 2022/2554, to ensure that algorithmic trading systems cannot create or contribute to disorderly trading conditions on the market and to manage any disorderly trading conditions which do arise from such algorithmic trading systems, including systems to limit the ratio of unexecuted orders to transactions that may be entered into the system by a member or participant, to be able to slow down the flow of orders if there is a risk of its system capacity being reached and to limit and enforce the minimum tick size that may be executed on the market.
Member States shall also require that the regulated market set appropriate standards regarding risk controls and thresholds on trading through such access and is able to distinguish and if necessary to stop orders or trading by a person using direct electronic access separately from other orders or trading by the member or participant.
The regulated market shall have arrangements in place to suspend or terminate the provision of direct electronic access by a member or participant to a client in the case of non-compliance with this paragraph.
Member States shall allow a regulated market to adjust its fees for cancelled orders according to the length of time for which the order was maintained and to calibrate the fees to each financial instrument to which they apply.
Member States may allow a regulated market to impose a higher fee for placing an order that is subsequently cancelled than an order which is executed and to impose a higher fee on participants placing a high ratio of cancelled orders to executed orders and on those operating a high-frequency algorithmic trading technique in order to reflect the additional burden on system capacity.
12. ESMA shall develop draft regulatory technical standards further specifying:
(h) the principles that regulated markets are to consider when establishing their mechanisms to halt or constrain trading in accordance with paragraph 5, taking into account the liquidity of different asset classes and sub-classes, the nature of the market model and the types of users, and without prejudice to the discretion of regulated markets in setting those mechanisms;
(i) the information that regulated markets are to disclose, including the parameters for halting trading that regulated markets are to report to competent authorities, pursuant to paragraph 5.
ESMA shall submit those draft regulatory technical standards to the Commission by 29 March 2025.