Wall Street loves winners. They enjoy backing stocks that are rising and want to avoid stocks that are falling. Yet rarely do they place a sell rating on a stock. Whether it is because stocks generally go up over time and a rising tide lifts all boats, or they don’t want to miss out on potential fees earned from dealing with a stock sale or other corporate transaction, investors are rarely told to sell any stocks. Out of the thousand of companies that trade on the NYSE or Nasdaq stock exchanges only a few d ...