Michael Price is a renowned money manager who learned finance as a $200-a-week research assistant under Max Heine at Heine Securities. After Heine died in 1988, he bought the company and managed to increase its assets under management to $17 billion before selling it to Franklin Securities in 1996. He continued on as chairman of the company until 2001, when he left and founded his own investing firm, MFP Investors LLC.

Baillie Gifford was established as an investment management partnership over 100 years ago.Existing clients’ interests are paramount and products are closed to new business to ensure that the integrity of strategies and the quality of service are maintained. This commitment to professional excellence ensures clients receive the firm’s full attention.<br>The firm manages money on behalf of some of the world’s largest professional investors. It counts international portfolios for US and Canadian clients and some of continental Europe’s leading pension funds and financial institutions as clients. Its broad geographical exposure also encompasses professional investor clients in Australia, Singapore, Hong Kong, China, Thailand, Korea, the Middle East and South Africa.

Carl Icahn is an activist investor. He takes significant stakes in public companies and typically pushes for change. He invests with three investment vehicles: the hedge fund Icahn Partners, American Real Estate Partners (a publicly traded private equity firm), and Icahn Management LP (another hedge fund). GuruFocus tracks the third portfolio, which covers all the stocks owned by Icahn Capital Management.

Warren Buffett is the most respected and successful investor in history, having been called "The Oracle of Omaha" for his impressive investing prowess. Buffett studied under the legendary Benjamin Graham at Columbia University; Graham had a major impact on Buffett's life and investment strategies. Buffett is Chairman of the miraculous Berkshire Hathaway, which he built from a textile company into a major insurance conglomerate.