Berkshire Hathaway (BRK.B) is starting to look like an index fund, but with greater specific...

|About: Berkshire Hathaway inc. (BRK.B)|By:, SA News Editor

Berkshire Hathaway (BRK.B) is starting to look like an index fund, but with greater specific company risk, writes Cullen Roche. He notes the diminishing returns of book value gains relative to the S&P 500 - 14% in Berkshire's first 20 years, 5.6% in the last 20, 3.9% in the last 5. Berkshire is so big, he wonders if it can continue to outperform to a degree outweighing the risks of owning a single holding company.