10 key figures who shaped Buffett's investment thinking, from mentor to successor. Each profile includes Buffett's own words about the relationship and their significance.
Chairman & CEO, Berkshire Hathaway; Author of all Shareholder Letters
The author of every shareholder letter on this site. Buffett founded Buffett Associates, Ltd. in 1956 at age 25, and later built Berkshire Hathaway into one of the most valuable companies in the world...
Professor, Investor, Author of "The Intelligent Investor"
Buffett's mentor and the father of value investing. Graham taught Buffett at Columbia Business School and later hired him at Graham-Newman Partnership. Buffett credits Graham with teaching him the fun...
Vice Chairman, Berkshire Hathaway (1978–2023)
Buffett's partner and Vice Chairman of Berkshire Hathaway from 1978 until his death in 2023. Munger was instrumental in evolving Buffett's investment philosophy from Graham's cigar-butt approach to bu...
Vice Chairman, Insurance Operations, Berkshire Hathaway
Joined Berkshire in 1985 and has run Berkshire's reinsurance operations with extraordinary results. Buffett has repeatedly called Ajit one of the most valuable people in the world and the greatest ins...
CEO, Berkshire Hathaway (2025–present)
Buffett's designated successor as CEO of Berkshire Hathaway. Abel has run Berkshire's non-insurance operations since 2018, overseeing the energy, railroad, manufacturing, and retail divisions. Known f...
Associate, Berkshire Hathaway (1980s)
Graham & Dodd Investor, Partner
President, National Indemnity (1968–1970)
Partner, Munger, Tolles & Olson
CEO, Cap Cities/ABC (1985–1996)