Mizuho Downgrades Relypsa, Says Near-Term Takeout 'Unlikely' By: Benzinga via Benzinga May 04, 2016 at 13:30 PM EDT Relypsa Inc (NASDAQ: RLYP) shares plunged more than 18 percent after Mizuho Securities downgraded the stock to Underperform from ... Read More >> Related Stocks: Macy's Sanofi-Aventis S.A. ADR