The European Securities and Markets Authority (ESMA) has published on 16 January 2019 its annual report on the application of accepted market practices (AMP) in accordance with the Market Abuse Regulation (MAR). AMPs are a defence against allegations of market manipulation. In particular, dealings in financial markets which are carried out for legitimate reasons and in conformity with an established AMP will not constitute market manipulation.
Vide: Market Abuse Regulation