Whole Foods boss investigated over blogs
But the company is also at the receiving end of what many see as a politically motivated investigation by the Federal Trade Commission, which is trying to halt Whole Foods' proposed purchase of a loss-making competitor, Wild Oats.
The commission revealed this week that Mr Mackey has been posting "voluminously" in online market discussion forums under the pseudonym Rahodeb, which is an anagram of his wife's first name, Deborah.
So far there is no allegation of wrongdoing on Mr. Mackey's part, and it is widely assumed that the chief executive of a publicly traded company would not be stupid enough to leak insider information on a stock discussion board, or make statements to pump up Whole Foods stock price.
But the commission is eager to show that Whole Foods is anti-competitive and allowing it to buy out a rival health food chain would lead to monopolistic practices. The blocking of the merger with Wild Oats comes as Wal-Mart begins to move into the organic food business, sensing the enormous profits to be made. Wal-Mart, the number one grocer in the US, could quickly come to dominate the small organic food sector.
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