New peak margin rules kick in; penalty if margin above 25%

New peak margin rules kick in from Tuesday. According the previous margin system, margins were collected upfront, but were calculated on the basis of end-of-day positions.

However, from December 1, the exchange will randomly take snapshots of all margins four times a day and the highest margin out of this will become 'peak margin'. A penalty will be imposed if the margin is over 25 percent.