Buffett's top positions in Berkshire Hathaway's portfolio include Apple, American Express, and Bank of America.

Warren Buffett still owns 13.8% of Berkshire’s stock, based on reported shares outstanding. His $152 billion net worth prior to Friday’s donations made him the world’s fifth-richest person ...

Billionaire investor Warren Buffett dished out $6 billion in Berkshire Hathaway shares to five charities Saturday, marking his biggest annual donation in nearly 20 years and parting with a portion ...

Warren Buffett, chairman of Berkshire Hathaway, tours the exhibition floor prior to the Berkshire Hathaway shareholders meeting in Omaha, Nebraska, on May 3, 2014. (Daniel Acker / Bloomberg via ...