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Berkshire worries grow as Buffett's CEO handover nears

Two months from now Warren Buffett will no longer be Berkshire's CEO and investors appear to be getting increasingly nervous about the year-end transition.

On May 2, the Friday before Buffett's surprise announcement at the annual meeting that he plans to step down, Berkshire's B shares closed at an all-time high just under $540 per share.

At that point, they were outperforming the S&P 500 by 22.4 percentage points for the year.

Today, they are 10.9 percentage points behind the benchmark index, a slight improveme

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