shares of conagra brands inc cag slumped 021 to 3774 monday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 005 to 413812 and the dow jones industrial average djia falling 017 to 3361869 conagra brands inc closed 356 short of its 52week high 4130 which the company achieved on january 9th