Commission Delegated Regulation (EU) 2017/575 of 8 June 2016 supplementing Directive 2014/65/EU of the European Parliament and of the Council on markets in financial instruments with regard to regulatory technical standards concerning the data to be published by execution venues on the quality of execution of transactions

RTS 27 on the quarterly data execution venues had to publish on execution quality (price, costs, likelihood of execution and other details by instrument and order size) to support best execution. The underlying publication duty was suspended in 2021 and later removed; the RTS is repealed by Delegated Regulation 2026/825 and remains valid until 11 August 2028.