Shares of hospital chains jumped on Thursday after the US Supreme Court upheld the centerpiece of US President Barack Obama's signature healthcare law.

Hospital company Community Health Systems Inc jumped 10 percent, while Tenet Healthcare Corp rose almost 11 percent.

Shares of health insurers were mixed. Large diversified companies such as UnitedHealth Group Inc and WellPoint were off about 1 percent and 4 percent respectively, and insurers that specialize in Medicaid, such as Amerigroup Corp , were up more than 4 percent.

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