Benzinga's Top Downgrades By: Benzinga via Benzinga May 05, 2014 at 08:01 AM EDT Analysts at Oppenheimer downgraded Sina (NASDAQ: SINA) from “outperform” to “underperform” and removed the target price of $90. Sina's ... Read More >> Related Stocks: Aci Worldwide Inc Estee Lauder Co Sina Corp Wesco International