If you want to know what’s really surprising in economic policy, it’s sometimes helpful to listen to what people are saying. It’s sometimes much more helpful to watch what people are buying and selling with real money. On this, liberal and conservative economists are presumably in real agreement.

Thus, I’m really ticked off at Matthew O’Brien of the Atlantic, who stole a march on me with the chart of the week, shown below. O’Brien’s great column shows a graph of Aetna’s stock price over the past week. Aetna’s stock price rose 6.5 percent in a single day. Similar (slightly less dramatic) patterns can be observed for other major insurers.


Why did this happen? O’Brien notes that the insurance industry prefers one outcome, can live with a second, and is dreadfully afraid of the third. In my view, firms such as Aetna really hope that the full structure of the Affordable Care Act is struck down. These firms can also live with the entire act being upheld. They would, however, be seriously hurt if the individual mandate were overturned while the rest of the new law’s provisions for guaranteed-issue and community rating were left basically intact.

Comments by Justice Kennedy and other justices made this last outcome seem less likely. Judging by Intrade’s big swing in the probability of the mandate being upheld (shown below) the odds of health reform being upheld have noticeably declined, too.


O’Brien concludes:

Wall Street has decided that whatever the fate of Obamacare, the result will be good for health insurers. Whether it’s quite so good for the sick and uninsured remains to be seen.

I hope I’m wrong about the answer to that one.

[Cross-posted at The Reality-Based Community]

Our ideas can save democracy... But we need your help! Donate Now!

Harold Pollack is the Helen Ross Professor at the School of Social Service Administration at the University of Chicago.