9. Joy Global's (JOYG) stock is up 46.2% in October and 5.7% this year. The company is one of the world's largest manufacturers of mining equipment, including electric shovels, dragline excavators and drills. It is benefiting from the boom in commodities prices.
8. Denbury Resources (DNR) advanced 46.5% last month but has declined 11.7% this year. It is an independent oil exploration and production company with a unique angle, it focus on injects carbon dioxide into wells that others may have abandoned to enhance oil recovery. Early this month, the Plano, Texas-based company said it plans to buy back as much as $500 million of its own stock, saying it thinks the company is undervalued.