Warren Buffett: The world's greatest investor?

After 60 years at the helm of Berkshire Hathaway, Warren Buffett is calling it a day. It is no surprise that his announcement was met with praise from key players in the business and investment world, including Bill Gates, Mark Cuban and Tim Cook. With returns of more than five million percent, he is widely regarded as the greatest investor ever. If there was a Mount Rushmore for investors, he’d be on it. As you’d expect, a succession plan has been in the works for a while, with Greg Abel, the current Vice-Chairman, hand-picked as the new top dog. Despite this, should investors be concerned...