Notable Downgrades: MDC Partners Inc. (MDCA), Applied Materials (AMAT), Medidata (MDSO), Amkor Technology (AMKR) April 28, 2015 WSP
52-Week Highs: AAON Inc. (AAON), Halozyme (HALO), Medidata Solutions (MDSO), AMAG Pharmaceuticals (AMAG), Radian Group (RDN) April 23, 2015 WSP
