The new symbol for ER2 on IB is RUT, then select TF. The problem is that you also have to add NYBOT in your trade permissions. IB shows a $1.00 / month fee for this data. I spoke to ICE/NYBOT yesterday and they said that IB is not supposed to charge anything for the data as they provide it to IB without cost. Also, margin requirements are $3750 / contract with $3000 maintenance at all times. No 1/2 margin during normal trading hours.