Thought you might find this interesting. Of course
Post# of 43064
The Fed realized that uncovered short sales provided enormous leverage over the prices of the metals and that it would be profitable for the bullion banks, such as JPMorgan, Scotia, and HSBC, to short the market heavily and then cover their shorts at lower prices produced by selling as a result of triggering stop-loss orders and margin calls.
http://www.paulcraigroberts.org/2015/05/26/fr...g-roberts/