Ribbon Communications RBBN Surges 528 as Shares Test Key Resistance Level DBV Technologies DBVT Edges Higher as Shares Test Key Resistance Zone Westwood Holdings Group WHG Shows Modest Gains as Shares Test Resistance Innovex International INVX Slides 37 as Energy Sector Headwinds Build SL Green Realty Corp SLG Rises 174 as Shares Approach Resistance Zone Cerus Corporation CERS Consolidates Near 273 as Support and Resistance Levels Hold Macys Inc M Holds Steady Near Support After Marginal Gains