See here for a post on finextra by Kate Koval of GFT about data collection under MIFID II and how it will influence MAR. The MAR rules start on July 3rd this year and outlaw abuse and the use of inside information on many financial trades as well as spot commodities. MAR includes “effective monitoring” rules which will include many energy and commodity market participants. As a result, many are improving their procedures and technology around monitoring .
Unlike REMIT, MAR does not contain specific data collection rules. Instead it relies on the data collection that will take place under MiFID II from January 2018, so that National Competent Authorities can monitor for abuse. The article examines some aspects of this and the challenges of dealing with the large data volumes that will result.