Wall Street was up overnight, with the Standard & Poor's 500 Index rising to a record high, as investors bet that the outlook for economic growth and corporate profits justify valuations.
"People are recognising that while some economic data has been muted, there is still a lot of value in the market based on corporate cash positions and multiples," Matthew Keator, partner in the Keator Group, a wealth management firm in Lenox, Massachusetts, told Reuters.
Shares of Humana soared, last up 8.7 per cent, after the company said planned government cuts to the Medicare Advantage programme will be less than previously expected. The cuts appeared to represent a funding decline of about 3.5 per cent to 4 per cent, less than the 6 per cent to 7 per cent Humana had expected, Reuters reported.
In afternoon trading in New York, the Dow Jones Industrial Average rose 1.16 per cent, the Standard & Poor's 500 Index climbed 1.19 per cent, while the Nasdaq Composite Index added 1.11 per cent. The S&P 500 rose as high as a record 1,858.71
Gains in shares of UnitedHealth, last up 3 per cent, and those of Exxon Mobil, last up 2.3 per cent, propelled the Dow higher.