# Commission Delegated Regulation (EU) 2017/566 of 18 May 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 for the ratio of unexecuted orders to transactions in order to prevent disorderly trading conditions (Text with EEA relevance), Article 2: Obligation to calculate the ratio of unexecuted orders to transactions

Extent: E+W+S+N.I.

Trading venues shall calculate the ratio of unexecuted orders to transactions effectively entered into the system by each of their members and participants for every financial instrument traded under an electronic continuous auction order book or a quote-driven or a hybrid trading system.

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Source: https://www.legislation.gov.uk/eur/2017/566/article/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-566/article-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.