Warren Buffett may have bought back more than $5 billion in Berkshire Hathaway stock in recent weeks

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· *Warren Buffett may have bought back more than $5 billion in Berkshire Hathaway stock in recent weeks.*
· *The famed investor disclosed his Berkshire stake in a filing last week, suggesting the number of outstanding shares shrunk by about 1.2% between April 23 and July 7.*
· *"It implies relatively strong buyback...