A few years ago, a couple of academic scholars did some research on Warren Buffett's trades. Their paper, entitled Imitation is the Sincerest Form of Flattery, concluded that investors could indeed have earned excess returns simply by buying the same stocks Warren Buffett bought for Berkshire Hathaway. This is true even if they bought the stocks after the information became public.
In today's interview with CNBC I discuss some of Buffett's recent investments, including IBM, and explain why it matters if Buffett is actually buying the common stock or if he is making a private investment in public equity (PIPE).
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