Billionaires dedicate a lot of resources to researching their investments, so the rest of us could benefit from paying attention to their decisions. The ultra wealthy don't always make the best investments, and your goals might not necessarily align with a billionaire's, but it can still be a great way to identify high-quality businesses with reasonable valuations.

These three stocks have significant billionaire ownership, and they have impressive fundamentals to support that.

Amazon (NASDAQ: AMZN) is a popular choice among billionaires and hedge fund managers: Ken Griffin, Daniel Loeb, and Andreas Halvorsen all have large positions in the stock. It offers reliable revenue growth, diversified operations, and impressive cash-flow generation, along with a wide economic moat that should protect its competitive position.

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Source Fool.com