it seems that the Mini-sized 10 yr note [YN] is closed since the move to E-CBOT at least that's what my TWS says... CBOT website is of no help... Does somebody know something about that? Thanks! IK
I noticed IB has the margin on the ZB around $1200 so maybe they changed it to ZN?? UPDATE: I guess ZB and ZN are the electronic contracts that mirror the full size pit contracts. What I am seeing is IB's daytrade margin.