Citi Slaps A Sell Rating On Agrium Shares By: Benzinga via Benzinga April 22, 2015 at 08:32 AM EDT In a report published Wednesday, Citi analysts downgraded the rating on Agrium Inc. (USA) (NYSE: AGU) from Neutral to Sell, while ... Read More >> Related Stocks: Agrium, Inc. DuPont USA Monsanto Co Syngenta AG ADS