Benzinga's Top #PreMarket Losers By: Benzinga via Benzinga September 28, 2015 at 08:25 AM EDT Verastem Inc (NASDAQ: VSTM) shares fell 53.97 percent to $2.61 in pre-market trading after the company reported stopping enrollment ... Read More >> Related Stocks: Bellerophon Ther Com Exelixis Inc Newmont Mining Vascular Biogen. Ord Verastem Inc