In retrospect, it seems odd that so many business analysts expected the U.S. Department of Justice to approve the proposed mergers of four enormous health insurers.

It was hard to make money selling Obamacare health insurance in the first year. Next year might not be much easier.

The big rate increases announced last week for health insurance policies sold by California’s version of the federal health reform are the latest evidence that the Affordable Care Act, despite its name, cannot do much to tame the rise of health care costs.

Health insurers are gearing up to comply with a new Covered California rule that will require them next year to ensure that all enrollees have a primary care provider.

The Justice Department is preparing lawsuits to block two giant health insurance deals, according to a person briefed on the matter, continuing a spate of antitrust actions in a whirlwind year for mergers and acquisitions.

UnitedHealth's second-quarter earnings jumped 11 percent to trump expectations even though the nation's largest health insurer took a bigger hit than expected from coverage linked to the Affordable Care Act.