The Cigna Group has ended its bid to acquire its rival Humana Inc., an American health insurance company. It has officially dropped its merger attempt and instead opted to buy back $10 billion worth of shares.

Cigna Group walking away from talks with Humana Inc. put an early end to what would have been one of the biggest deals of the decade.

Managed-care provider Cigna Group on Sunday announced a massive stock buyback, amid a report that it has abandoned its bid to buy rival Humana Inc. Citing sources familiar with the matter, the Wall Street Journal reported Sunday that Cigna and Humana could not agree to financial terms of an deal,

Cigna is planning a $10 billion increase in its share repurchase authority, a major stock buyback that will take place instead of an acquisition of Humana.

Cigna Group is planning to increase its stock buyback by $10 billion after calling off its pursuit of Humana Inc., according to a person with knowledge of the situation.