Bank stocks surged broadly on Trump's win, with investors anticipating deregulation and pent-up M&A demand to be unlocked.

Though the Oracle of Omaha has slashed Berkshire Hathaway's stake in one of America's biggest banks, he's bought shares of another time-tested financial stock in all but one of the last 25 quarters.

Warren Buffett, the CEO of Berkshire Hathaway, has sold $10.5 billion worth of Bank of America stock. At the same time, he has spent nearly $78 billion on shares of his own company. Over the past eight quarters,

Warren Buffett's Berkshire Hathaway took stakes in Domino's Pizza and swimming pool supplier Pool Corp. in the third quarter while continuing to trim stakes in longtime holdings Apple and Bank of America.