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Warren Buffett

Warren Buffett is the Chairman and CEO of Berkshire Hathaway, and one of the world's richest men (~$44 billion in net worth as of 2012).

Expanded Definition

Mr. Buffett is best known as a value investor -- and a wildly successful one. He looks for undervalued, wide-moat businesses with easy-to-understand business models. He generally avoids high-flying technology stocks because of their rich valuations and uncertain futures. His patient, contrarian style has produced outstanding results at his holding company, Berkshire Hathaway, which has grown its per-share book value at an annualized 19.8% rate in the 47 years that Buffett has been at the helm.

Foolish investors looking to track Berkshire's investments can follow TrackBuffett on Motley Fool CAPS, which loosely tracks the performance of Berkshire's investment portfolio based on SEC filings.

Recent Berkshire Hathaway investments illustrate his style. He bought BNSF railroad and Lubrizol, a maker of motor oil additives and specialty chemicals. During the '09 financial crisis, he was lender of last resort to companies like General Electric, often in return for preferred stock.

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