Benzinga's Top Downgrades

B. Riley downgraded Mattson Technology, Inc. (NASDAQ: MTSN) from Buy to Neutral. Mattson shares closed at $3.60 on Wednesday. Analysts at Bank of America downgraded Unum Group (NYSE: UNM) from Buy to Neutral. Unum shares closed at $36.76 on Wednesday.Stephens & Co. downgraded Weatherford International Plc (NYSE: WFT) from Overweight to Equal-weight. Weatherford International shares closed at $10.77 on Wednesday.Analysts at SunTrust Robinson Humphrey downgraded Zafgen Inc (NASDAQ: ZFGN) from Buy to Neutral. The price target for Zafgen has been lowered from $25 to $7. Zafgen shares closed at $6.28 on Wednesday.Analysts at Goldman Sachs downgraded Education Realty Trust, Inc. (NYSE: EDR) from Neutral to Sell. Education Realty Trust shares closed at $36.44 on Wednesday.Wedbush downgraded PerkinElmer, Inc. (NYSE: PKI) from Outperform to Neutral. The price target for PerkinElmer is set to $56. PerkinElmer shares closed at $52.56 on Wednesday.Credit Suisse downgraded Verint Systems Inc. (NASDAQ: VRNT) from Outperform to Neutral. The price target for Verint Systems has been lowered from $60 to $45. Verint Systems shares closed at $46.46 on Wednesday. Analysts at Goldman Sachs downgraded American Campus Communities, Inc. (NYSE: ACC) from Neutral to Sell. American Campus shares closed at $40.00 on Wednesday.Analysts at Bank of America downgraded Travelers Companies Inc (NYSE: TRV) from Buy to Neutral. Travelers shares closed at $114.76 on Wednesday.