By Caroline Valetkevitch
(Reuters) - U.S. stocks ended weaker on Monday, pulling back from a recent rally that took them to new 2016 highs, as losses in commodity-related and industrial shares offset gains in healthcare.
The S&P materials sector <.SPLRCM> fell 1 percent after copper prices touched their lowest in a month, while energy shares <.SPNY> slipped with oil prices.
"What we're seeing is some classic bullish fatigue setting in. Oil and other commodities are all in pullback mode ... and investors are very focused on commodities because they led on the way up," said Adam Sarhan, chief executive of Sarhan Capital in New York.
Investors also are bracing for a weak first-quarter profit season, with earnings for S&P 500 companies projected to have fallen 7.1 percent from the year-ago first quarter, according to Thomson Reuters data.
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The Dow Jones industrial average <.DJI> closed down 55.75 points, or 0.31 percent, to 17,737, the S&P 500 <.SPX> lost 6.65 points, or 0.32 percent, to 2,066.13 and the Nasdaq Composite <.IXIC> dropped 22.75 points, or 0.46 percent, to 4,891.80.
Stocks have mostly gained since mid-February, recovering from deep losses thanks to stabilizing oil prices and reduced concerns about China's economy.
After the bell, shares of Allergan Plc
Dublin-based Allergan has agreed to be bought by Pfizer Inc
During the regular session, General Electric
Shares of the medical device maker Edwards Lifesciences
Virgin America
Investors await fresh news on the interest rate outlook following last week's encouraging data and Federal Reserve Chair Janet Yellen's cautious tone on raising rates.
While the Fed's projections point to two rate hikes this year, traders expect only one, according to the CME Group's FedWatch programme.
Volume was relatively light. About 6.4 billion shares changed hands on U.S. exchanges, below the 7.6 billion daily average for the past 20 trading days, according to Thomson Reuters data.
Declining issues outnumbered advancing ones on the NYSE by 2,231 to 803, for a 2.78-to-1 ratio on the downside; on the Nasdaq, 1,684 issues fell and 1,133 advanced for a 1.49-to-1 ratio favoring decliners.
The S&P 500 posted 57 new 52-week highs and no new lows; the Nasdaq recorded 65 new highs and 22 new lows.
(Additional reporting by Abhiram Nandakumar in Bengaluru; Editing by Anil D'Silva, Nick Zieminski and Phil Berlowitz)