About Tweedy, Browne Company LLC, is a leading practitioner of the value-oriented investment approach of legendary investor, author (The Intelligent Investor, Security Analysis), and Columbia Business School professor Benjamin Graham. Serving originally as a broker to Graham and other respected value investors, the firm’s 100-year history is grounded in undervalued securities, first as a market maker, then as an investor and investment adviser. Founded 1920 Affiliate Since 1997 Headquarters Stamford, CT