The U.S. Supreme Court will hear oral arguments Wednesday about severability and Medicaid expansion.
Wednesday marks the third and final day of hearings as the Patient Protection and Affordable Care Act, otherwise known as Obamacare, will be debated for two-and-a-half hours.
The court debated on Tuesday the constitutionality of an individual mandate
That's where severability enters the discussion, because if the Supreme Court rules an individual mandate unconstitutional then it must consider if Congress would have intended to pass the law without that stipulation.
Magarian said the argument of severability returns to the government's argument on Tuesday that it needed the individual mandate in order to accomplish important market regulation.
Also at stake Wednesday is the question of the expansion of Medicaid that the 26 states opposing Obamacare have said would put undue cost pressure on the expanded number of Americans the states would have to extend the program to.
The federal government must pay for all newly eligible Medicaid individuals through 2016 and pay 90% of the burden (the other 10% taken on by the states) starting in 2020.
If the Medicaid expansion is struck down, it could hurt managed care companies exposed to the program.
"We think that this argument probably is the least convincing, but certainly if for some reason the Medicaid expansion were deemed overly coercive to the states ... that would be a negative for any managed care company that participates in Medicaid," said Matthew Coffina, senior health care analyst at Morningstar.
Coffina said managed care companies like AmeriGroup
Health Care stocks are unlikely to fluctuate significantly on Wednesday's oral arguments as the Supreme Court won't issue a formal judgment on Obamacare until June. The most traders can do Wednesday is infer tone from the justices' questioning.
Health Care stocks were essentially unchanged Wednesday as Aetna, UnitedHealth, and AmeriGroup were all slightly higher, and Cigna and Molina were slightly lower. Shares of Aetna were at $47.16, up 27 cents, or 0.57%; UnitedHealth was at $55.72, up 29 cents, or 0.53%; AmeriGroup rose to $66.62, up 36 cents, or 0.54%. Shares of Cigna slid to $46.99, down 12 cents, or 0.25%;=, and Molina was at $22.57, down 19 cents, or 0.56%.
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