Investors love to follow the portfolio moves of Warren Buffett, given his incredible track record compounding capital as CEO of Berkshire Hathaway. One such business dominates the credit card space, and the Oracle of Omaha owns almost $3 billion worth of its shares.

Warren Buffett says he never tried to make money on the stock market. That might sound a little strange coming from the chairman and chief executive of Berkshire Hathaway (BRK.A) , who according to the Bloomberg Billionaire Index is the world's ninth richest man 💵💰Don't miss the move: Subscribe to TheStreet's free daily newsletter 💰💵 But we'll let the Oracle of Omaha explain what he means.

Warren Buffett’s Berkshire Hathaway has spent another $54 million to purchase Sirius XM stock, giving it a stake of more than 35% in the satellite-radio company.