If you want to earn strong returns in the stock market, it can be advantageous to see what the best investors are buying. Warren Buffett certainly falls within that esteemed group. The Oracle of Omaha has generated fortune-building gains for Berkshire Hathaway's shareholders for nearly 60 years by investing in high-quality businesses with attractive long-term growth prospects.

Here are two of Buffett's favorite stocks in Berkshire's $373 billion investment portfolio.

Buffett has been buying shares of Occidental Petroleum (NYSE: OXY) aggressively over the past year. It's easy to see why. The oil and gas producer owns some of the most valuable acreage in the shale-rich Permian Basin. It's also a leader in the potentially multitrillion-dollar market for decarbonization solutions.

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Source Fool.com