Icahn's Wealth Takes a Hit from Short-Seller Report.

Short-sellers have made only $9 million in mark-to-market profit from Carl Icahn's investment firm, Icahn Enterprises LP, which has lost $6.3 billion in market value since the release of a short-seller report by Hindenburg Research. This is because Icahn Enterprises is one of the least shorted stocks among companies with market values above $1 billion. However, profits may be much greater when accounting for options trading. The stock's slide toward $30 has pulled a range of put options deep into the money, likely bringing robust returns for investors who played the sharp decline.