Alirght, I've been interested in trading the e-mini futures and I've been watching them carefully for a couple of weeks now.... What I can't seem to figure out is not really about the e-minis at all, but it is instead about the indexs... I have noticed that the indexs such as NDX and INDU have showed change in the afterhhours trading sessions.. I wake up at 3:30 am EST and I have been watching my IB quotescreen... The indexs seem to be minimally active, and the futures seem to respond. Can anyone fill me in on why the indexs show change, and what they represent since most/all US exchanges are closed...? Thanks in advance!