UBS Downgrades Celanese On Valuation, Expects Tough Comps Ahead By: Benzinga via Benzinga July 06, 2015 at 07:30 AM EDT In a report published Monday, UBS analyst John Roberts downgraded the rating on Celanese Corporation (NYSE: CE) from Buy to Neutral, ... Read More >> Related Stocks: Celanese Corp UBS Group Ag ADR