Ken Tropin is the Founder and Chairman of Graham Capital Management, one of the largest commodity trading advisors in the United States. He developed most of the firm’s core trading programs and is responsible for managing the strategic investment of the firm's proprietary capital. Tropin is best known for being one of the first to develop a guaranteed fund, in which investors were guaranteed the return of their entire investment after a certain period. This concept proved to be highly popular and is widely used today in the form of both guaranteed funds and structured notes.