Quoted from a yahoo finance post

the market manipulation of stock prices by the street is unbelievable. Way overvalued to way undervalued. Some stocks are selected for manipulation and some are not. The large banks JPM MS GS C etc etc have more shares and more wealth than GOD. They can collude and do what ever the HFT dictates. This is not a fair market between buyers and sellers trading on company value or outlook. It is coordinated 

manipulation to take money from daytraders, chart "experts", and anyone foolish enough to act on analysts or media pundants advice.