Benzinga's Top Pre-Market Losers

Metabolix Inc (NASDAQ: MBLX) shares fell 45.74% to $3.25 in the pre-market trading. Archer Daniels Midland Co (NYSE: ADM) reported that it will end a biodegradable plastics joint venture with Metabolix.

JDA Software Group Inc (NASDAQ: JDAS) moved down 14.36% to $28.09 in the pre-market session. JDAS issued weak fourth-quarter revenue forecast.

Diamond Foods Inc (NASDAQ: DMND) dipped 10.35% to $29.70 in the pre-market session. Federal prosecutors have opened a criminal inquiry into DMND's walnut payments, the Wall Street Journal reported.

Copano Energy LLC (NASDAQ: CPNO) dipped 4.30% to $33.84 in the pre-market session. CPNO announced the commencement of a public offering of 4,500,000 common units.