Last quarter, Bill Ackman’s Pershing Square Capital Management bought $2 billion, or around 1%, of Procter & Gamble's stock. Given that Ackman's an activist investor, is this a good sign? Fool analyst Anand Chokkavelu doesn't think so. Although it's early in the game, he sees shades of Ackman's failed attempt to influence Target to monetize its real estate. Anand thinks activist investors are more useful to small, troubled companies -- not large, successful businesses like P&G and Target. Ultimately, he thinks Ackman will be a distraction for management. He explains in the following video.

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