Graham, Benjamin

British-born American investor, professor, and author widely regarded as the father of value investing. His books "Security Analysis" (1934, co-authored with David Dodd) and "The Intelligent Investor" (1949) laid the intellectual foundation for analyzing stocks based on intrinsic value rather than market speculation. Graham taught at Columbia Business School, where his most famous student, Warren Buffett, credits him with shaping his entire investment philosophy.