Warren Buffett
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Warren Buffett on his investment success

Warren Buffett is reckoned to be the most successful investor of all time.

He bought the first shares in Berkshire Hathaway - the company that was to become the vehicle for his investment empire - back in 1962 for $7.60. Now a single share in Berkshire Hathaway will cost you $132,778.

Mr Buffett and his biographer Carol Loomis spoke to American Public Radio's Kai Ryssdal about his investment success and the state of the global economy.

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