Watch These 5 Huge Call Purchases In Friday Trade By: Benzinga via Benzinga September 15, 2017 at 04:25 AM EDT Benzinga's newsdesk monitors options activity to notice unusual patterns. These large volume (and often out of the money) trades ... Read More >> Related Stocks: Cerner Corp Halozyme Therapeutic Laredo Petroleum Holdings Inc Mallinckrodt plc Oracle Corp