Benzinga's Volume Movers By: Benzinga via Benzinga May 02, 2016 at 10:26 AM EDT Opower Inc (NYSE: OPWR) surged 31.27 percent to $10.37. The volume of Opower shares traded was 19611 percent higher than normal. ... Read More >> Related Stocks: Ceva Inc GNC Holdings Inc Navios Maritime Midstream Partn Oracle Corp