The fiscal cliff was hardly the only important deadline today in Washington. Today's the day for the Secretary of Health and Human Services to tell states whether their plans for health insurance exchanges pass muster.
Shares of the insurance giant Aetna are looking awfully healthy this morning. Acquiring another insurer is likely providing a bit of a shot in the arm. It's the latest in a stream of health insurance mergers we've been charting — many of them happening for the same reasons.