China Gerui Advanced Materials Group Ltd (NASDAQ: CHOP ) fell 13.64% to $1.14 at 9:55 am. China Gerui Advanced Materials reported a 44.5% drop in its Q3 revenue. Hewlett-Packard Company (NYSE: HPQ ) shares dipped 12.86% to $11.59. Hewlett-Packard posted downbeat Q4 revenue. Ultrapetrol (Bahamas) Ltd (NASDAQ: ULTR )