Stock Analysts’ upgrades for Wednesday, September 13th: American Electric Power (NASDAQ:AEP) was upgraded by analysts at LADENBURG THALM/SH SH from a sell rating to a neutral rating. Amphastar Pharmaceuticals (NASDAQ:AMPH) was upgraded by analysts at StockNews.com from a hold rating to a buy rating. Actinium Pharmaceuticals (NYSEAMERICAN:ATNM) was upgraded by analysts at StockNews.com to a […]