Margins typically change from time to time, therefore we need to talk in terms of generalities as oppose to figures. Therefore, the highest value we assign to a CL spread is a maintenance margin.
However, this is NOT a hard fast rule and could change depending on customer credit, history of trading, etc
The current highest rate (5/5/2014) is $1,400
ICE would be available to you immediately upon funding the account.
We only support Rithmic via SierraChart because it has worked for us and our customers.