From Yahoo Finance:
If the Supreme Court overturns a key provision of the Affordable Care Act, political turmoil will grip Washington. At least one sector of the financial markets could quake as well.
The healthcare industry has been a big beneficiary of Obamacare, as the ACA is known, since the law has extended healthcare coverage to more than 16 million Americans who didn’t have coverage before. For hospitals, insurance companies, drugmakers and pharmacies, those are new customers with money to spend—in many instances backed by subsidies provided by the government.