Warren Buffett thinks the 'elite' have wasted $100 billion ignoring his best investment advice

Warren Buffett's Berkshire Hathaway will publish its annual letter to shareholders on February 3. In his letter last year, Buffett said that the "elite" have wasted $100 billion ignoring his best investment advice. The 2018 edition could shed light on Berkshire Hathaway's healthcare initiative with Amazon and JPMorgan, and Berkshire's interest in doing big acquisitions.  Business Insider will covering Buffett's 2018 letter over the weekend, so check back for updates.  Warren...