Article 48 12.

the requirements to ensure trading systems of regulated markets are resilient and have adequate capacity, except the requirements related to digital operational resilience;

the ratio referred to in paragraph 6, taking into account factors such as the value of unexecuted orders in relation to the value of executed transactions;

the controls concerning direct electronic access in such a way as to ensure that the controls applied to sponsored access are at least equivalent to those applied to direct market access;

the requirements to ensure that co-location services and fee structures are fair and non-discriminatory and that fee structures do not create incentives for disorderly trading conditions or market abuse;

the determination of where a regulated market is material in terms of liquidity in that financial instrument;

the requirements to ensure that market making schemes are fair and non-discriminatory and to establish minimum market making obligations that regulated markets must provide for when designing a market making scheme and the conditions under which the requirement to have in place a market making scheme is not appropriate, taking into account the nature and scale of the trading on that regulated market, including whether the regulated market allows for or enables algorithmic trading to take place through its systems;

the requirements to ensure appropriate testing of algorithms, other than digital operational resilience testing, so as to ensure that algorithmic trading systems including high-frequency algorithmic trading systems cannot create or contribute to disorderly trading conditions on the market;

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;

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.