Stock Upgrades, Downgrades

Each weekday, TheStreet.com Ratings updates its ratings on the stocks it covers. The proprietary ratings model projects a stock's total return potential over a 12-month period, including both price appreciation and dividends. Buy, hold or sell ratings designate how the Ratings group expects these stocks to perform against a general benchmark of the equities market and interest rates.

While the ratings model is quantitative, it uses both subjective and objective elements. For instance, subjective elements include expected equities market returns, future interest rates, implied industry outlook and company earnings forecasts. Objective elements include volatility of past operating revenue, financial strength and company cash flows.

Vina Concha a Toro(VCO Quote) produces and exports wine in Chile and internationally. It has been downgraded to hold from buy. The company demonstrated revenue growth of 45.9% in the second quarter of 2007 compared with the same period last year, and net income increased by 96.7% over the same period. It also shows expanding profit margins and a debt-to-equity ration below that of the industry average. ...