Berkshire Hathaway Holds Bank of America, American Express, Visa, and Mastercard Stock, but So Does This Low-Cost Vanguard ETF

Diversification can be a useful way to manage risk in the financial sector. Warren Buffett-led Berkshire Hathaway (BRK.A -0.99%) (BRK.B -1.18%) achieved a new milestone in August, surpassing $1 trillion in market cap for the first time. Although Berkshire is known for its public equity investments in companies like Apple and Coca-Cola, the value of the rest of the business is actually much higher. In fact, Berkshire's holdings in public companies are worth about $320 billion compared to the $1.026 trillion ...