Health Care

Ask Investors Whether Obamacare Is Working

They're loving their returns on U.S. health-care stocks.

So do investors.

Photographer: Andrew Harrer/Bloomberg

Since the Patient Protection and Affordable Care Act took effect two years ago in the rockiest of rollouts, American health-care companies outperformed every industry in the U.S. Taken together, they are the best collection of stocks among worldwide peers.

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