Exchange-traded funds (ETFs) can be fantastic investments for many people. For the most part, Warren Buffett invests in individual stocks. Through his holding company Berkshire Hathaway, Buffett owns shares of both the Vanguard S&P 500 ETF (NYSEMKT: VOO) and the SPDR S&P 500 ETF Trust (NYSEMKT: SPY).
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