The maximum theoretical margin of an instrument on a determined date represents the value of the margin requirement on this date for a position made up of a unit of the instrument without collateral.
To see the maximum theoretical margin values for listed derivatives, for long and short positions, download the file Maximum Theoretical Margin Value for Open Interest and Minimum Value of Financial Assets Deposited as Collateral.
The holding period or minimum timeframe to settlement corresponding to the margin values may vary per type of contract, due to the specifics of each.