Afternoon Movers; LDK Solar Down on Lower Guidance

Silicon Graphics International SGI +26.32% on upbeat earnings reported yesterday. LDK Solar Co LDK -21.61% on lower revenue guidance that was announced yesterday. Barnes & Noble, Inc. BKS -17.37% after Liberty Media decides to invest in the company instead of acquiring it. Autodesk ADSK -13.28% after the company's PT was lowered by several analyst firms.