Paper Silver is the largest bankster short position.
Deutsche Bank released chat room logs as part of a settlement for colluding with other banksters to suppress the silver market (links below)
https://www.scribd.com/document/333624219/Silver-Rigging-1
https://www.scribd.com/document/333627011/Silver-Rigging-2
(#SilverSqueeze is trending on twitter)