"In 1988, we made major purchases of Federal Home Loan Mortgage Pfd and Coca Cola. We expect to hold these securities for a long time," Buffett said. "In fact, when we own portions of outstanding businesses with outstanding managements, our favorite holding period is forever." Berkshire Hathaway would continue to add to its Coca-Cola position over the following years and see its share count blossom from several stock splits. The firm now owns 400 million shares of Coca-Cola, which makes up around 8.5% of its portfolio.