Proofpoint (PFPT) Reaches $72.50 After 6.00% Gap Down; Polymet Mining (NYSEMKT:PLM ...

Polymet Mining Corporation (NYSEMKT:PLM) had an increase of 3.71% in short interest. PLM's SI was 2.99 million shares in April as released by ... Read more http://ift.tt/2pKdimc