Berkshire Hathaway A and B shares had a mixed session, a day after hitting record highs.

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Wall Street sank lower Wednesday afternoon, as oil prices crept to record highs and investors were handcuffed by mixed economic reports.

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Stocks were hanging off session highs but still hanging on to gains Thursday after the retail sector's mixed bag of June limited the height of the advance.

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But the markets put in new 5-year highs despite the performance of its biggest cap stock, and in the face of a somewhat mixed economic data week.

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