Fidelity's Fund Manager Anthony Bolton

Fidelity's Fund Manager Anthony Bolton

Kevin Lee/Bloomberg

During the 28 years he managed as much as $12 billion running the U.K.-focused Fidelity Special Situations fund, Anthony Bolton delivered average annual returns of 19.5 percent - transforming a 10,000 pound investment in 1979 into 1.49 million pounds in 2007, according to Morningstar Inc.