NEW YORK -- Among the sector activity stories for Thursday, June 28, from The Associated Press:

_ Shares of hospital operators jumped after the Supreme Court upheld the 2010 health care overhaul law. Meanwhile, medical laboratory operators traded higher, medical device companies were mostly lower and drug companies slipped.

_ Shares of health insurers mostly fell after the decision was released, although Medicaid coverage providers soared as the court's ruling preserved an expansion of the government program set to start in 2014.

_ Bank stocks fell after the British Treasury chief said an investigation over manipulation of international interest rates that landed Barclays$450 million in fines had spread to Citigroup Inc. as well as Britain'sHSBC and the Royal Bank of Scotland, and Switzerland's UBS. Meanwhile, the New York Times reported that a trading loss at JPMorgan Chase & Co. could reach $9 billion, mor than the company had estimated.