Aetna Inc.'s $37 billion deal to buy rival insurer Humana Inc. was blocked by a federal judge, thwarting one of two large mergers that would reshape the U.S. health-care landscape.
Aetna Inc.'s $37 billion deal to buy rival insurer Humana Inc. was blocked by a federal judge, thwarting one of two large mergers that would reshape the U.S. health-care landscape.