The top pre-market NASDAQ stock market losers are: BSD Medical, ASML Holding, Aixtron, A123 Systems, Vodafone Group, Mellanox Technologies, Ryanair Holdings, Micron Technology, and Alvarion.

BSD Medical Corp. (BSDM) lost 6.25 percent to $5.25 in the pre-market trading.

ASML Holding NV (ASML) plunged 3.04 percent to $33.54 in the pre-market session.

Aixtron AG (AIXG) plummeted 2.10 percent to $32.23 in the pre-market trading.

A123 Systems, Inc. (AONE) tumbled 1.95 percent to $8.54 in the pre-market trading.

Vodafone Group plc (VOD) fell 1.93 percent to $25.43 in the pre-market session. The company announced new lower pricing for using a smartphone while travelling in Europe. For those who travel occasionally to Europe, a domestic data plan could be taken abroad for only 2 euros per day, which represents a cost reduction of up to 60 percent over existing plans.

Mellanox Technologies, Ltd. (MLNX) dropped 1.75 percent to $24.77 in the pre-market trading. The company said it agreed to buy Voltaire Ltd.(VOLT) for $8.75 a share in cash or total equity value of about $218 million.

Ryanair Holdings plc (RYAAY) declined 1.48 percent to $30.03 in the pre-market session.

Micron Technology Inc. (MU) decreased 0.92 percent to $7.56 in the pre-market trading.

Alvarion Ltd. (ALVR) moved down 0.78 percent to $2.56 in the pre-market session.

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