Express Scripts (ESRX) and Medco (MHS) are delaying the closing of their merger to give...

|About: Express Scripts, Inc. (ESRX)|By:, SA News Editor

Express Scripts (ESRX) and Medco (MHS) are delaying the closing of their merger to give antitrust regulators extra time to review the deal which would create the largest U.S. pharmacy benefits manager, according to an SEC filing. ESRX +1.5%, MHS +1.5% premarket.