US President Barack Obama awards the 201

US President Barack Obama awards the 2010 Medal of Freedom to investor, industrialist and philanthropist Warren Buffett during a ceremony at the White House in Washington, DC, February 15, 2011. Often called the “legendary investor Warren Buffett,” he is the primary shareholder, Chairman and CEO of Berkshire Hathaway. Mr. Buffett has pledged that all of his shares in Berkshire Hathaway – about 99 percent of his net worth – will be given to philanthropic endeavors. He is a co-founder of The Giving Pledge, an organization that encourages wealthy Americans to devote at least 50 percent of their net worth to philanthropy. AFP PHOTO/Jim WATSON (Photo credit should read JIM WATSON/AFP via Getty Images)