Benzinga's Volume Movers By: Benzinga via Benzinga September 23, 2016 at 10:45 AM EDT Imperva Inc (NYSE: IMPV) surged 20.3 percent to $52.21. The volume of Imperva shares traded was 1159 percent higher ... Read More >> Related Stocks: Alphabet-C Cisco Systems International Business Machines Planet Fitness Salesforce Twitter, Inc. Yelp Inc