The Nasdaq composite added 25.95 points, or 0.3 percent, to 7,714.48. The Russell 2000 index of smaller-company stocks picked up 10.39 points, or 0.7 percent, to 1,563.93.
Major stock indexes in Europe finished mostly higher.
U.S. stocks have had a strong showing this year, with all the major indexes showing a gain of at least 11 percent.
One key to the recent rally has been the belief that the Federal Reserve will slow its pace of increases for interest rates. The worry in December was that the central bank would raise rates too fast in the face of a slowing global economy and choke off growth. The Fed will meet to discuss interest-rate policy this week, with an announcement scheduled for Wednesday, but economists expect it to announce no change to rates.
“The expectations are that the Fed won’t do anything in the first half of the year,” Stovall said.
Some economists say the Fed could release documents Wednesday that would suggest one rate increase in 2019, or possibly zero, after the Fed raised rates four times in 2018 and three times in 2017.
Perhaps more important is what the Fed says about its vast trove of bonds. The central bank bought trillions of dollars of bonds after the 2008 financial crisis to keep interest rates low and support markets, but it’s been slowly letting some roll off as they mature. Investors want to know how much the Fed will ultimately hold onto, and how long it will take to get there.
Monday’s upward swing in oil prices came after OPEC canceled a meeting that had been scheduled for next month. The move means that a production cut imposed by the oil cartel in January remains in place, at least until the cartel agrees to meet again.
Benchmark U.S. crude oil rose 1 percent to settle at $59.09 a barrel, while Brent crude gained 0.6 percent to close at $67.54 a barrel.
Energy stocks got a boost from the pickup in oil prices. National Oilwell Varco jumped 6.2 percent, Halliburton gained 3.2 percent and Marathon Petroleum rose 2.7 percent.
Investors also bid up shares in Worldpay after Fidelity National Information Services agreed to buy the payment processor for about $35 billion in stock and cash. Including Worldpay’s debt, Fidelity National valued the deal at $43 billion.
Worldpay’s U.S.-listed shares jumped 10 percent. Fidelity National, also called FIS, slipped 0.7 percent.
Edwards Lifesciences vaulted 6.2 percent for the biggest gain in the S&P 500 after it said patients in a trial using an expandable valve had better results than those who had standard open-heart surgery.
Boeing fell further as the investigation continues into two recent deadly crashes of its 737 Max 8 plane model. Preliminary information shows clear similarities between the two. The stock declined 1.8 percent, following its 10.3 percent loss last week.
Bond prices fell. The yield on the 10-year Treasury rose to 2.61 percent from 2.59 late Friday.
The dollar fell to 111.41 Japanese yen from 111.48 yen on Friday. The euro strengthened to $1.1338 from $1.1320.
Gold fell 0.1 percent to $1,301.50 an ounce, silver was little changed at $15.32 an ounce and copper added 0.1 percent to $2.91 a pound.
In other energy futures trading, wholesale gasoline climbed 1.4 percent to $1.88 a gallon, heating oil added 0.1 percent to $1.97 a gallon and natural gas picked up 2 percent to $2.85 per 1,000 cubic feet.
AP Business Writer Yuri Kageyama contributed from Tokyo.
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