margining
as defined in Commission Regulation (EU) No 1031/2010 of 12 November 2010 on the timing…, Article 3, point (33) (Definitions)
the process by which collateral is to be pledged by an auctioneer or a bidder, or one or more intermediaries acting on their behalf, to cover a given financial position, encompassing the entire process of measuring, calculating and administering the collateral put up to cover such financial positions, intended to ensure that all payment commitments of a bidder and all delivery commitments of an auctioneer or one or more intermediaries acting on their behalf can be met within a very short period of time