Berkshire Hathaway (BRK.B) is back, but not in the way you think. For a long time, the iconic asset manager did not do buybacks. Now, it’s changing course yet again and is focusing on buybacks once more. Greg Abel, the new CEO, is leading the charge with a multimillion-dollar purchase of his own. And the timing could not be better. The reason is simple. Investors have been asking a fundamental yet basic question ever since Warren Buffett decided to step back from the podium. What’s going to happen with a ...