The late Senator Everett Dirksen once reportedly said, "A billion here, a billion there, and pretty soon you're talking about real money." With that quote in mind, Warren Buffett's dividend income this year will be real money.

Since launching a new stake in the U.S. oil producer Occidental Petroleum ( OXY -2.09%), Berkshire has bought the stock like there is no tomorrow. Occidental is the sixth-largest position in Berkshire's portfolio, and Berkshire now owns over 28% of outstanding shares.

Warren Buffett, the legendary investor known as the "Oracle of Omaha," continues to make waves in the financial world even as he approaches his mid-90s. His company, Berkshire Hathaway, has been