With a market capitalization of more than $950 billion, Berkshire Hathaway ranks as the world's eighth-largest company. Led by CEO and world-famous investor Warren Buffett, the company has delivered incredible returns for its long-term shareholders and continues to be massively influential in the investing world.

Notably, the Oracle of Omaha has never been much of a fan of portfolio diversification and has instead preferred to weight Berkshire's stock holdings heavily toward a small number of high-conviction investments. But Buffett and Berkshire have actually been making some dramatic moves lately, and the balance of the company's portfolio has shifted in some big ways.

Let's take a look at two of the stocks where he's most invested in now.

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Source Fool.com