Carl Icahn ranks as one of the most famous activist investors in the world -- and one of the most successful. His net worth currently totals close to $5.8 billion. Although Icahn has money in dozens of stocks, his top position, by far, is in his own Icahn Enterprises LP (IEP -0.06%). He owns nearly 86% of the holding company, which generates close to two-thirds of its revenue from investments and energy. Two things especially stand out about Icahn Enterprises right now. First, it offers a mind-boggling divi ...