Concentrated investing : strategies of the world's greatest concentrated value investors

"Lou Simpson,who managed GEICO's investment portfolio from 1970 to 2011, was chosen by Warren Buffett to succeed him at the helm of Berkshire Hathaway's investment operations until he retired a couple of years ago at the age of 76. Mr. Simpson's track record at GEICO easily qualifies him for the Investing Hall of Fame, yet he has appeared in only a handful of brief newspaper articles over the years. Kristian Siem was once described in Barron's as Norway Warren Buffett. Virtually unknown in the U.S. except to a very small handful of investors, Siem has growth the book value of his closely held holding company, Siem Industries, at 22% annually over the past 25 years by sticking faithfully to two key principles: Always invest in your field of competence, and concentrate your investments. Siem has conducted his business dealings according to a powerful yet simple motto: Arrogance is always a handicap; humility is a virtue. Leucadia National Corporationhas been called the mini-Berkshire Hathaway. Originally a troubled finance company called Talcott Corp., Leucadia was taken over in XX by Ian Cumming and Joe Steinberg, who together achieved a XX% growth in a book value per share to date, with opportunistic investments ranging from Insurance to Real Estate to Casinos. Leucadia has a cult following among value investors, but there has never been a definitive history of the company and of Cumming/Steinberg's record"--