Warren Buffett’s Berkshire Hathaway (BRKB) crushed fourth-quarter earnings estimates on Saturday, aided by strong results from its flagship insurance business. On Monday, Berkshire Hathaway stock broke out to an all-time high. The Berkshire chief also shared his latest annual letter to shareholder, providing insights into his latest thinking on the business, the economy and investing more broadly. Berkshire Hathaway Earnings…
