Benzinga's M&A Chatter for Wednesday May 6, 2015 By: Benzinga via Benzinga May 06, 2015 at 18:17 PM EDT The following are the M&A deals, rumors and chatter circulating on Wall Street for Wednesday May 6, 2015: Alexion To Acquire Synageva ... Read More >> Related Stocks: Alexion Pharmaceuticals Axis Capital Holdings Macy's Moneygram Intl Western Union