While well-known consumer brands like Apple and Coca-Cola get a lot of attention among Berkshire Hathaway's top holdings, there are much smaller positions that might present some attractive opportunities.

Consider Ally Financial (NYSE: ALLY). Warren Buffett's conglomerate owns 9.6% of the digital bank's shares outstanding. But the stake represents just 0.3% of Berkshire's entire portfolio, making it a tiny position.

Ally shares have risen just 35% in the last five years, and they currently trade below book value. In the banking industry, that's an attractive valuation because it indicates the business sells at a discount to the entire value of the equity it owns.

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Source Fool.com