The chairman and chief executive officer of Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B), Warren Buffett, is one of the greatest investors around. His company has a compounded average annual gain of 19.8% over the past five-plus decades. Knowing what stocks Buffett and Berkshire are investing in can be worthwhile for those looking to give their portfolio a boost.

Berkshire Hathaway currently holds just over $900 million in stock (roughly 1.7% of shares outstanding) in the medical products distributor McKesson (NYSE: MCK). The company started buying McKesson stock in early 2022 and built up to its current position.

But just because Berkshire bought it, is the stock right for your portfolio? Let's take a closer look at McKesson's business model and fundamentals to see what prompted Berkshire Hathaway to invest. 

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Source Fool.com