This document compares the annual percentage change in Berkshire Hathaway's per-share book value and the S&P 500 index with dividends reinvested over the period between 1965 to 2012. It shows that Berkshire outperformed the S&P 500 in most years, with its book value growing at a compounded annual rate of 19.7% compared to 9.4% for the S&P 500. Overall, Berkshire's book value increased 586,817% compared to 7,433% for the S&P 500 over the same period. In 2012, Berkshire's book value increased 14.4% while the S&P 500 grew 16%, making it one of the few years that