Benzinga’s Top Pre- Market Losers (AONE, SIGM, JASO, VOD, PACR)

A123 Systems, Inc. (NASDAQ: AONE) decreased $0.63 or 3.50% to $17.35 after it reported Net loss of $22.8 million or $1.78 a share compared with $19 million, or $2.06 per share a year earlier. Revenues increased to $23.6 million versus $22.9 million a year ago due to a sharp increase in products revenue.

Sigma Designs, Inc. (NASDAQ: SIGM) plunged 6.81% to $12.34 Collins Stewart downgraded Sigma Designs to a sell rating.

JA Solar Holdings Co., Ltd. (ADR) (NASDAQ: JASO) plunged 1.69% to $4.15 after being downgraded by RBC Capital Markets from Outperform to Sector Perform.

Vodafone Group Plc (ADR) (NASDAQ: VOD) plummeted 2% to $22.40 after Vodafone said that it will reduce its OPEX costs by leveraging its global scale, controlling marketing expenses and other such measures.

Pacer International, Inc. (NASDAQ: PACR) declined by 0.19% at $3.68 in the pre-market trading. The 52 week trading range for PACR is $1.57 - $11.36.