Never looked at these before... I think I am confused as to how to read this on IB. Is ZC a $1m+ contract with a $5K/point value. It's trading in 1/4s and 1/2s that sounds suspiciously expensive -- or more likely I have my calculations wrong. Any help here?
cbot's ag traded electronically "only" during the evening session prior to last friday. This might be the information you are seeing.