Stock Analysts’ upgrades for Tuesday, May 2nd: Athersys (NASDAQ:ATHX) was upgraded by analysts at StockNews.com from a sell rating to a hold rating. Franklin Resources (NYSE:BEN) was upgraded by analysts at StockNews.com from a sell rating to a hold rating. Conn’s (NASDAQ:CONN) was upgraded by analysts at StockNews.com from a sell rating to a hold […]