With that as the backdrop, what is relatively new Berkshire Hathaway (NYSE: BRKA)(NYSE: BRKB) CEO Greg Abel apt to do with the $397 billion in liquidity he hasn't yet used? Repurchase more Berkshire stockPrevious Berkshire CEO and chief stock picker Warren Buffett wasn't staunchly against stock repurchases; they did happen while he was at the helm. Growth and income are clearly converging in one corner of the tech industryGreg Abel isn't simply inflating the value of outstanding Berkshire Hathaway shares by taking some out of circulation, though. Expand its energy business's capacityFinally, it's an often-overlooked aspect of the company, but Berkshire Hathaway isn't just a collection of individual hand-picked stocks. The conglomerate also owns many privately held companies, including power utility outfit Berkshire Hathaway Energy, which Abel previously ran.