Ever heard of a short squeeze? Take a look at VW (and the same for the USD). For details: search for "volkswagen" at http://www.maxkeiser.com/
"Porsche's disclosure on Sunday that it held 74pc of the car maker – rather than the previously assumed 42.6pc – prompted a huge scramble to cover short positions in Volkswagen, which had been the most shorted stock in Germany's benchmark DAX index. "
That was a very tiny short squeeze. Could be much more exciting if they would buy 15%!!!