Equities have trended to the upside of late, with the S&P 500 up 5.9 percent over the past seven sessions, ending at its 52nd record close of the year on Friday. The Dow's seven-session streak is its longest since March 2013.
The speed and scale of the rally could limit upside, especially in the final trading week of the year, when many market participants are out on holiday and there are few catalysts. Volume is expected to remain light, which could leave the market more susceptible to big swings.
"Everything is a go right now, but there’s no reason to expect we’ll start seeing big moves this week. I don’t see anything ... that could derail or upset the market," said Mark Martiak, senior wealth strategist at Premier Wealth/First Allied Securities in New York.
Energy shares were among the day's biggest gainers. The S&P energy index .SPNY rose 0.7 percent alongside a rise of 0.6 percent in crude oil CLc1. Oil rose on concerns about disruption to exports from Libya, though it remains sharply lower for the year, having fallen in 12 of the past 13 weeks. [ID:nL3N0UD09X]
Nabors Industries (NBR.N), a drilling contractor, was the S&P's top percentage gainer, up 3.9 percent at $13.32. Newfield Exploration (NFX.N) rose 3 percent to $27.77.
Gilead Sciences Inc (GILD.O) rose 2.8 percent to $96.48 after Morgan Stanley upgraded the stock to "overweight" from "equal-weight."
LiveDeal Inc (LIVE.O) jumped 26 percent to $4.14 on volume that was more than 10 times its 10-day average after reporting its 2014 results.
At 10:06 a.m., the Dow Jones industrial average .DJI rose 12.19 points, or 0.07 percent, to 18,065.9, the S&P 500 .SPX gained 3.6 points, or 0.17 percent, to 2,092.37 and the Nasdaq Composite .IXIC dropped 0.09 points, or 0 percent, to 4,806.77.
U.S.-listed shares of the National Bank of Greece (NBG.N) fell 9.1 percent to $1.80 after the country's parliament failed to elect a new president, throwing the country's international bailout into doubt. The main Athens stock market index .ATG fell 3.9 percent.
"Greece is always worth paying attention to, but it’s a hiccup. I don’t see it as anything that makes a difference in the overall market," Martiak said.
Advancing issues outnumbered declining ones on the NYSE by 1,824 to 1,014, for a 1.80-to-1 ratio; on the Nasdaq, 1,368 issues rose and 1,095 fell for a 1.25-to-1 ratio favoring advancers.
The S&P 500 was posting 55 new 52-week highs and 5 new lows; the Nasdaq Composite was recording 87 new highs and 14 new lows.
