UBS Downgrades Teekay Tankers To Sell By: Benzinga via Benzinga June 25, 2015 at 08:29 AM EDT Analysts at UBS downgraded Teekay Tankers Ltd. (NYSE: TNK) from Neutral to Sell. Teekay Tankers shares have gained 72.49 percent over ... Read More >> Related Stocks: Teekay Tankers Ltd UBS Group Ag ADR