Electric car battery developer A123 Systems (AONE), which took off yesterday on a supply deal...

|About: A123 Systems, Inc. (AONEQ)|By:, SA News Editor

Electric car battery developer A123 Systems (AONE), which took off yesterday on a supply deal with GM, is down 7.3% today as Goldman's Mark Wienkes downgrades shares to Neutral and lowers his PT to $5. Wienkes remains concerned about A123's long-term profitability, which he thinks the GM deal doesn't affect.