Quote from FredBloggs:
quick question -
roll over for z4 starts monday right? - week b4 expiry (13th)
I think it starts with the Tuesday day session. But last time, I found out the volume of the new contract didn't pick up (greater than the old one) until Wednesday or Thursday. So I start monitoring the daily volume totals of both of the contracts. When the volume of the new one exceeds the old one, then I make my switch.
