Legendary investor Peter Lynch popularized the idea of "buying what you know." If you use and like a product or service, chances are that lots of other people do, too, and chances are that the company is performing well.

Let's put financial powerhouse (NYSE: V) to the test. Really, is there anyone you know who doesn't have a Visa credit or debit card? I'm sure people like that exist, but they're few and far between. Visa has nearly 4.5 billion cards, or more than half of the entire global population.

But if it's already so big, is there any room for growth? Or is it too late to buy Visa stock?

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Source Fool.com