Doubts Mount Over Merger Of Health Insurers Anthem, Cigna

Wall Street expressed growing doubts about a pending $54 billion merger of U.S. health insurers Anthem Inc and Cigna Corp on Monday as news of management squabbles added to concerns over its review by antitrust regulators.

Cigna shares closed down 4 percent at $126.15, well below Anthem's original $188 per share offer of cash and stock announced last July. Anthem shares fell 1.8 percent to $133.18.