InvestorsBuz Business Reviews Today 12.13.16 What Went Wrong with Alexion Stock? Buz Investors Alexion stock ( Alexion Pharmaceuticals, Inc. (NASDAQ: ALXN)) dropped over 13% by midday on Monday as the company’s CEO and CFO resigned, a month after the company began investigating allegations related to sales practices of its prized blood disorder drug “Soliris.” Alexion stock…