Berkshire hathaway inc to the shareholders of berkshire hathaway inc berkshires gain in net worth during 2015 was 154 billion which increased the per share book value of both our class a and class b stock by 64 over the last 51 years that is since present management took over. 2015 berkshire hathaway letter to shareholders 3 key takeaways within berkshire hathaway energy employment fell from 6750 in 2006 to 5700 last year all while capacity has increased . Berkshire hathaway letters to shareholders 2015thank you https googl p2c74k for you help. For shareholders and others who are interested a book that compiles the full unedited versions of each of warren buffetts letters to shareholders between 1965 and 2014 is available for sale at this link. This book contains all buffett letters to shareholders through the 50th anniversary 2014 letters published in 2015 warren e buffett first took control of berkshire hathaway inc a small textile company in april of 1965