Bernstein analyst Alexia Howard downgraded General Mills (GIS), Kellogg (K), J.M. Smucker (SJM), Conagra Brands (CAG), and Campbell Soup (CPB) to Underperform from Market Perform. As reasons for the downgrades, Howard cited the companies' deteriorating revenue trends and her belief that any takeover premiums for the companies " are unlikely to be particularly high." She adds that activist investors probably won't get involved in the stocks while they are trading at such high valuations. Finally, the analyst believes that the companies are being hurt by consumers' desire for fresher foods and unfavorable shelf space trends at retailers. General Mills target to $52 from $61, Campbell target to $54 from $61, J.M. Smucker target to $130 from $147, Kellogg target to $69 from $83, Conagra target remains $36.