Bernstein Research analyst Ana Gupta expects Aetna Inc. (NYSE: AET) and UnitedHealth Group Inc. (NYSE: UNH) to benefit when the Supreme Court rules on the constitutionality of the Patient Protection and Affordable Care Act. Shares of Aetna surged $3.04 to close at $49.56 while UnitedHealth stock soared $2.67 to close at $58.11.