institutions control stock prices. They don't want it to go up while they are accumulating/buying the stock.
Once they loaded up on the stock, the will make this run. Sometimes it takes a few weeks, sometimes a couple of days ... for AMD, it takes longer, because prices are so cheap at $15 that institutions are all loading up.
I agree...I suppose you will have to read Thomson virually opposite. I have noticed while watching level two how quickly the Bid or Ask will bulk up to either block the stock from going up and down. It is amazing how much control the institutions/hedgies have. I have a feeling that 15.13 was the low, and we will creep up from here. Since there is probably no significant news expected the institutions/hedgies should have no problem controling this stock, yet with 20,000,000 shares traded per day I would say there has to be some deep pockets and/or trade swapping going on. It is really to bad this is so out of control, yet I suppose if you monitor these trends you could really take advantage of these situation. The hard part is just identifying how far down the stock will go before they turn it around.