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 has made some big moves in Berkshire Hathaways portfolio over the past year. These three companies are outstanding businesses with outstanding management. But not every investor should follow Buffett into his three biggest "forever" holdings right now.