RPC Inc RES Edges Lower Amid Modest Selling Pressure Stem Inc STEM Slips 146 Amid Resistance Test Key Support at 96 in Focus Amylyx Pharmaceuticals AMLX Declines 25 as Stock Tests Key Support Ford F Surges 485 to 1665 Key Resistance Level in Sight Centessa Pharmaceuticals CNTA Holds Steady Near Key Support After Minimal Movement