Last week's biggest Gulf Coast gainers were Walter Energy Inc. at $5.04 (5.64%), Roper Industries Inc. at $1.73 (3.04%) and Syniverse Holdings at $1.31 (7.09%). The biggest decliners were HSN Inc. at $-0.59 (-1.94%), Sykes Enterprises at $-0.51 (-2.18%) and Cinnabar Ventures at $-0.50 (-27.78%).