But hospital emergency rooms, which have to treat patients regardless of whether they’re insured, are more likely to get paid if almost everyone they treat has insurance. Having insurance will also spur more people who might have otherwise put it off to seek medical treatment.
‘‘Insured people have more purchasing power, and they'll buy whatever you make, whether you’re a supplier of drugs or devices,’’ said Gerard Wedig, a health care economist at the University of Rochester.
U.S.-listed shares of Barclays, the British bank, plunged 12 percent. A day earlier, the bank had agreed to settle charges with U.S. and U.K. regulators who accused it of manipulating key international interest rates.
New York-based bank JPMorgan Chase fell 2.5 percent, more than any other company in the Dow index, after the New York Times reported that a trading loss there first estimated at $2 billion could eventually reach $9 billion.