Buffett: don't expect another 50 years of outperformance at Berkshire

NEW YORK (Reuters) - In his 50 years at the helm of Berkshire Hathaway Inc, Warren Buffett has transformed a failing textile company into a sprawling conglomerate that has vastly outperformed most of the rest of corporate America. But he now says: Do not expect a repeat of that outperformance in the next 50. In the 84-year-old's annual shareholder letter released on Saturday, Buffett said Berkshire has grown so large - 751,000 times its original net worth per share - that the future pace o