NEW YORK (REUTERS) - United States (US) stocks rose on Monday and the S&P 500 hit a record intraday high, helped by gains in health insurers' shares and optimism about merger activity.
The Nasdaq reached a 14-year high, though all three indexes closed off their highs for the day, with the S&P 500 finishing less than a point away from its record closing high of 1,848.38.
Humana Inc and UnitedHealth Group ranked among the S&P 500's biggest percentage gainers, with Humana's stock jumping 10.6 per cent to $113.69 after it said the government's proposed cuts to the private Medicare program appeared to be less than it had forecast. UnitedHealth shares rose 3 per cent to $76.01.
Aetna Inc rose 2 per cent to close at $71.80 after giving a 2014 earnings outlook.
Weak recent economic data has largely been blamed on harsh winter weather, which has kept investors hopeful that the pickup in the economy remains intact. The latest data showed the Chicago Fed National Activity index fell to -0.39 in January from 0.16 in December while financial data firm Markit's preliminary February reading on the services sector fell to 52.7 from 56.7.
"There's still a lot of hope right now (that) the slightly weaker (economic) numbers we've been seeing are weather- related," said Mr Bryant Evans, portfolio manager at Cozad Asset Management, in Champaign, Illinois.
The Dow Jones industrial average rose 103.84 points or 0.64 per cent, to close at 16,207.14. The S&P 500 gained 11.36 points or 0.62 per cent, to end at 1,847.61, after rising to an intraday record of 1,858.71.
The Nasdaq Composite added 29.558 points or 0.69 per cent, to finish at 4,292.968.
The S&P 500 broke above resistance at 1,841, which propelled further gains, said Mark Luschini, chief investment strategist at Janney Montgomery Scott in Philadelphia.
In the deal arena, RF Micro Devices Inc agreed to buy TriQuint Semiconductor Inc for about US$1.6 billion (S$2 billion), while Men's Wearhouse Inc raised its cash tender offer for rival men's clothing retailer Jos. A. Bank Clothiers Inc to $63.50 per share from $57.50.
Shares of RF Micro shot up 21 per cent to $7.03 while TriQuint's stock surged 26.1 per cent to $11.64.
Men's Wearhouse shares jumped 7.5 per cent to $48.51 while Jos. A. Bank's stock soared 9.1 per cent to close at $60.04.
Adding some support was news that Ukrainian President Viktor Yanukovich was ousted. While that leaves a potential power vacuum and an ailing economy, it calmed some worries.
Many traders are looking ahead to Thursday, when Federal Reserve Chair Janet Yellen will speak to the Senate Banking Committee in her semi-annual testimony about monetary policy.
Ms Yellen's comments will be scoured for insight into the extent to which bad weather has affected economic activity, as well as for confirmation that the Fed will not make any changes to its schedule for trimming stimulus.
About 6.8 billion shares changed hands on US exchanges, below the 7 billion average so far this month, according to data from BATS Global Markets.
Advancers beat decliners on the New York Stock Exchange by a ratio of about 1.6 to 1 and on the Nasdaq by about 1.8 to 1.