Among the companies whose shares are moving in pre-market trading Tuesday are STMicroelectronics, Ceragon Networks, Trina Solar, Vodafone Group, Mellanox Technologies, Nokia Corp, Cellcom Israel and AstraZeneca plc.

STMicroelectronics NV (STM) stock surged 6.07 percent to $5.07 in pre-market session. The stock has a 52-week low of $4.61, a 52-week high of $11.67 and $4.23 billion in market capitalization.

Ceragon Networks Ltd (CRNT) surged 3.93 percent to $8.72 in pre-market session after announcing that it had received orders of approximately $4 million to supply microwave backhaul solutions and turnkey services including installation, project management and commissioning to the Navajo Tribal Utility Authority (NTUA).

Trina Solar Ltd. (TSL) stock gained 2.57 percent to $5.99 in pre-market session. The China-based solar company's shares advanced Monday on speculation that U.S. tariffs announced May 17 won't effect its sales.

Vodafone Group Plc. (VOD) stock advanced 1.86 percent to $26.78 in pre-market session after reporting a 1.2 percent gain in full year revenues for the fiscal year ended March 31.

Mellanox Technologies, Ltd. (MLNX) stock advanced 1.49 percent to $59.40 in pre-market trade. The company announced Monday that it has been recognized in CRN's 2012 Virtualization 100 list, an annual list featuring the top 100 vendors in the virtualization space published by UBM Channel's CRN that helps Solution Providers identify and evaluate virtualization products and programs.

Nokia Corp. (NOK) stock plunged 4.97 percent to $2.87 in pre-market session. The stock has a 52-week low of $2.79, a 52-week high of $8.51 and $11.31 billion in market capitalization.

Cellcom Israel Ltd. (CEL) stock declined 1.96 percent to $8.00 in pre-market session.

AstraZeneca plc. (AZN) stock declined 1.37 percent to $41.63 in pre-market session. The stock has a 52-week low of $40.89, a 52-week high of $52.54 and $53.64 billion in market capitalization.

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