Want to make money in the stock market? Make sure to track the stocks that are in Berkshire Hathaway's portfolio. Buffett has led Berkshire for decades, showing himself as one of the best investors of all time, and monitoring the positions he's ultimately responsible for can give your portfolio a leg up.

If you want to follow Buffett's best ideas, the two stocks below are for you.

In 2011, Buffett made one of his best stock purchases ever. The company? None other than (NYSE: V). You're likely very familiar with Visa as a brand, but you might not know what makes the company an incredible investment.

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Source Fool.com