Analyst Robert Renck, of R. L. Renck & Co. has rated Apple stocks a “sell,” citing “the sparse way in which it breaks out operating results of its segments,” reports Herb Greenberg in his column for MarketWatch. “Renck believes the company’s skimpy segment disclosure makes it a ‘have-faith, trust me’ stock. As a result, he has warned his clients, Wall Street’s bullish forecasts aren’t without risk for this simple reason: Analysts can’t get a true and complete picture of how Apple makes its money.”