Benzinga's Top Pre-Market Losers

Ariad Pharmaceuticals Inc. ARIA dipped 2.16% to $16.75 in the pre-market session.Ariad Pharmaceuticals' PEG Ratio is -1.03. Alexza Pharmaceuticals Inc. ALXA shares fell 2.16% to $4.53 in the pre-market trading. Alexza Pharmaceuticals trailing-twelve-month ROE is -693.37%. Advanced Micro Devices, Inc. AMD shares dropped 6.85% to $4.08 in pre-market trading after analyst in Goldman Sachs downgraded the company stocks to “sell” on Wednesday. Wal-Mart Stores Inc. WMT dipped 1.85% to $78.38 in the pre-market session after Walmart posted mixed results in the first-quarter earnings report.