text: A May 2012 paper attributed this man's success to "Quality Versus Junk" and "Betting Against Beta" and cited the effects of 1.6 times leverage; that paper discussed this man's alpha.
full_question: A May 2012 paper attributed this man's success to "Quality Versus Junk" and "Betting Against Beta" and cited the effects of 1.6 times leverage; that paper discussed this man's alpha. This man used the example of a group of coin-flipping orangutans that all come from the same zoo in"The Superinvestors of Graham-and-Doddsville," which mentions his partner Charlie Munger and advocates value investing. This man has noted the importance of insurance float as a reason for his company's ownership of GEICO; in 2008 that company made a major preferred stock and warrant investment in Goldman Sachs. This man's decision to donate his wealth to the Bill and Melinda Gates Foundation inspired the Giving Pledge, and his comments about his secretary's tax rate relative to his own inspired a namesake tax on high income individuals. For 10 points, name this billionaire investor who leads Berkshire Hathaway.
first_sentence: A May 2012 paper attributed this man's success to "Quality Versus Junk" and "Betting Against Beta" and cited the effects of 1.6 times leverage; that paper discussed this man's alpha.
raw_answer: Warren Edward Buffett