Joel Greenblatt is an American businessman, hedge fund manager, and academic known for his expertise in value investing. He founded Gotham Capital, a private investment partnership that has achieved an impressive 40% annualized return since its inception in 1985. In addition to his investment career, Greenblatt serves as an adjunct professor at Columbia Business School, where he shares his knowledge of finance and investing with students.

Greenblatt is also recognized for his contributions to the field of investment literature, having authored several influential books, including 'You Can Be a Stock Market Genius' and 'The Little Book That Still Beats the Market.' His work emphasizes the importance of value investing principles and has garnered a significant following among both novice and experienced investors. Furthermore, he co-founded the Value Investors Club, a platform that connects value investors and promotes investment ideas.