Benzinga's Top Downgrades

Analysts at Oppenheimer downgraded

Raptor Pharmaceutical Corp.RPTP

from Perform to Underperform. Raptor Pharmaceutical's shares closed at $15.79 on Thursday. Analysts at Barclays downgraded

Centene CorpCNC

from Overweight to Equal-weight. The price target for Centene has been lowered from $88.00 to $81.00. Centene shares closed at $74.45 on Thursday. Analysts at UBS downgraded

Celanese CorporationCE

from Buy to Neutral. The price target for Celanese has been raised from $69.00 to $74.00. Celanese shares closed at $73.72 on Thursday. Analysts at Morgan Stanley downgraded

Intuitive Surgical, Inc.ISRG

from Equal-weight to Underweight. Intuitive Surgical shares closed at $486.29 on Thursday. Citigroup downgraded

BT Group plc (ADR)BT

from Buy to Neutral. BT Group's shares closed at $71.16 on Thursday. FBR Capital downgraded

VMware, Inc.VMW

from Outperform to Market Perform. VMware shares closed at $85.17 on Thursday. Guggenheim Securities downgraded

Aegerion Pharmaceuticals, Inc.AEGR

from Neutral to Sell. Aegerion Pharmaceuticals' shares closed at $18.59 on Thursday. KeyBanc downgraded

CIRCOR International, Inc.CIR

from Overweight to Sector Weight. CIRCOR International's shares closed at $52.87 on Thursday. BB&T Capital downgraded

HORSEHEAD HOLDING CORP.ZINC

from Buy to Hold. Horsehead Holding's shares closed at $11.45 on Thursday. Stephens & Co. downgraded