Few billionaire investors possess the influence of Warren E. Buffett, chief executive of Berkshire Hathaway. With his company’s stock buybacks making waves and a tax proposal dubbed the “Buffett Rule” aimed at the wealthy, Mr. Buffett has thrust himself in the headlines.

DealBook’s Andrew Ross Sorkin spoke to Mr. Buffett and Cathy Baron Tamraz, chief executive of Business Wire, at the New York Stock Exchange in an interview for CNBC.

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