Big diff between the MDCO shorts and AMRN shorts - the 'tutes bought up the shorted shares, 'tute ownership was something like 128%, but AMRN still has 'tute ownership of around 50% - no short squeeze in MDCO. In fact, the day it gapped from $58 to $73 (11/19), ratio of new shorts to short covers was 60% - hard to believe, but true.