What's with JP Morgan and its massive silver hoard?

``... so far, despite the apparently huge JP Morgan silver inventory, silver prices appear to have been held down by activity on the futures markets, again believed to be dominated by JP Morgan, thus enabling it to continue to expand its silver holdings at low prices... this bank has managed to acquire more than three times as much silver as the other two (Hunts and Buffett) put together, all the while on sharply declining prices -- which would seem to be a theoretical impossibility under normal trading circumstances.''