Benzinga's Top #PreMarket Losers

Yahoo! Inc. YHOO shares dipped 3.20 percent to $29.35 in pre-market trading after falling 3.53 percent on Monday. Vodafone Group Plc (ADR) VOD shares fell 2.68 percent to $33.37 in pre-market trading after declining 1.15 percent on Monday. Raptor Pharmaceutical Corp. RPTP shares tumbled 2.39 percent to $7.34 in pre-market trading. Citigroup downgraded Raptor Pharmaceutical from Buy to Hold. Ariad Pharmaceuticals, Inc. ARIA fell 1.50 percent to $7.90 in pre-market trading after rising 1.52 percent on Monday. Shire PLC (ADR) SHPG shares declined 1.35 percent to $218.37 in pre-market trading after dropping 0.74 percent on Monday.