Ackman’s Pershing Buys New Stake In Buffett’s Berkshire
Bill Ackman, chief executive officer of Pershing Square Capital Management LP, speaks during a Bloomberg Television interview in New York, U.S. (Photographer: Christopher Goodney/Bloomberg)

Ackman’s Pershing Buys New Stake In Buffett’s Berkshire

(Bloomberg) -- Activist investor Bill Ackman has built a new position in Warren Buffett’s Berkshire Hathaway Inc., according to a regulatory filing.
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