The Dow Jones Industrial Average has retreated 16% this year and contains some powerhouse blue-chip stocks that now yield mouthwatering valuations. Some Dow Jones stocks have performed worse than others, but today's worst performers could be tomorrow's best investments. Here are three cheap stocks on the Dow Jones that you should consider seriously.

Warren Buffett started accumulating shares of Apple (NASDAQ: AAPL) in 2016 and bought more in the first and second quarters of this year as the shares slumped. He regards the company as "probably the best business ... in the world."

Apple commands roughly 50% of the smartphone market in the U.S. and a healthy share of the global market. But it might be the services that iPhone customers add on that keep making the company more profitable every year. For a small fee, iPhone users can download music from the Apple Music app, make contactless payments with Apple Pay, and store their pictures in their iCloud storage.

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Source Fool.com