By Victor Reklaitis and Sara Sjolin, MarketWatch

NEW YORK (MarketWatch) -- U.S. stocks traded slightly higher on Monday afternoon, as the S&P 500 stayed on pace for another record close, and the Dow industrials tried to build on its seven-day winning streak.

Utilities, the best-performing S&P sector this year, showed the biggest gain among the 10 main sectors on Monday.

The S&P 500 (SPX) was last up 3 points, or 0.2%, to 2,092 after touching a new intraday peak above 2,093.

The Dow Jones Industrial Average (DJI) rose 3 points, or less than 0.1%, to 18,056. The blue-chip gauge is working on achieving an eight-session winning streak.

The tech-laden Nasdaq Composite (RIXF) gained 1 point, or less than 0.1%, to 4,808, while the small-cap Russell 2000 (RUT) tacked on 3 points, or 0.2%, to 1,218.

Composite volume for both the NYSE and Nasdaq was tracking at roughly half of the 30-day average. Trading is expected to be light throughout this holiday-shortened week, as it was Friday, when composite volume was its lowest for the year so far.

Even so, both the S&P and Dow closed at records on Friday, while the Nasdaq ended at its highest level since March 2000. Several analysts have predicted equities will move higher before New Year's Eve, arguing that it takes a war, a natural disaster or a massive financial crisis to ward off an end-of-year rally. Read: Stocks to stay buoyant into the New Year

Movers and shakers: Gilead Sciences Inc. (GILD) was among the S&P 500's best performers as Morgan Stanley upgraded it to overweight and Barron's picked the stock as one of its 10 favorites for 2015.

Energy-related stocks such as Nabors Industries Ltd. (NBR) were also among the S&P's big winners, although they gave back some gains as crude oil prices(CLG5) fell again and settled at the lowest level since May 2009.

The energy SPDR (XLE), an ETF that tracks the S&P 500's energy stocks, remains down about 9% for the year, but it established at least a short-term bottom in mid-December. Check out: Energy stocks may be starting to attract bargain hunters

Also read: Here are the best S&P 500 stocks and sectors of 2014

Greek drama: The global trading mood on Monday was dented by renewed uncertainty about the political landscape in Greece. The country's parliament rejected Prime Minister Antonis Samaras's candidate in a third and final presidential vote on Monday, meaning parliament will now have to be dissolved and a snap election held.

Greece's ATHEX Composite index tumbled after the failed vote. But the pan-European Stoxx Europe 600 index closed higher, shaking off early losses.

Also read: 5 things to know about the crucial Greek election

Other markets: Gold futures also finished lower, while the dollar gained ground on the euro in the wake of Greece's election news.

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