(NYSE: V) is arguably one of the best businesses in the world. And its stock reflects this fact, soaring almost 380% in the past decade, a gain that beats the broader S 500.

Even Warren Buffett, considered to be the greatest capital allocator ever, is a shareholder through Berkshire Hathaway's public equities portfolio. Berkshires stake is small, but that's still a vote of confidence.

However, this card payments giant isn't without risks. In fact, the single biggest threat to Visa might surprise you.

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Source Fool.com