Someone is manipulating/accumulating through ISEG. All day long they put up large blocks on the ask at resistance and also have smaller blocks a penny lower on the bid. It forces sellers to hit the bid, i.e. lower their price to get out.
It seems that with the way automated order routing works on the NASDAQ it's possible for someone to essentially throw a road block up on the ask side unless there are buyers willing to step up in price. That's the underlying problem. There's no buyers willing to bid up at resistance areas and the stalemate continues while the ISEG manipulator accumulates shares on the bid side.
this from another trader : Watching ISEG and FLOW patterns today was very interesting to say the least. I used those two exchanges to my advantage today with some very good results. They were excellent predictors of when the price would cap (when they were selling big amounts) and when to get back in again (when they were buying big amounts).