UPDATE 1-Aetna CEO addresses antitrust concerns over Humana deal
July 06, 2015 at 10:39 AM EDT
NEW YORK, July 6 (Reuters) - Aetna Inc Chief Executive Mark Bertolini said Monday he was confident an antitrust review of the company's proposed purchase of Humana Inc would allow the deal to close in the second half of 2016, seeking to allay investor concerns over significant regulatory hurdles.