Why ParkerVision Shares Are Down More Than 30% By: Benzinga via Benzinga June 23, 2014 at 10:34 AM EDT Shares of ParkerVision (NASDAQ: PRKR) tumbled more than 34 percent in pre-market trading before being halted shortly after 9:00 a.m. ... Read More >> Related Stocks: Qualcomm, Inc. Starwood Hotels & Resorts