By Sruthi Shankar, Johann M Cherian and Carolina Mandl

(Reuters) -The S&P 500 and the Nasdaq Composite rose on Monday to more than one-week highs, boosted by a rally in semiconductor stocks and a report that suggested the incoming Trump administration could adopt a less aggressive tariff stance than expected.

The Dow Jones Industrial Average fell 25.57 points, or 0.06%, to 42,706.56, the S&P 500 gained 32.91 points, or 0.55%, to 5,975.38 and the Nasdaq Composite gained 243.30 points, or 1.24%, to 19,864.98.

Seven of the 11 S&P 500 sectors ended lower, but communication services and tech stocks climbed 2.13% and 1.44%, respectively.

“What we’re seeing is more of what happened last year, which is a rally concentrated on the largest stocks,” said Michael Green, portfolio manager at Simplify Asset Management, adding that flows from 401(k) retirement plans are helping drive stocks higher.

Chipmakers got a boost from Microsoft’s plan to invest $80 billion to develop artificial-intelligence-enabled data centers, as well as Foxconn’s forecast-beating fourth-quarter revenue.

Nvidia rose 3.43%, Advanced Micro Devices gained 3.33% and Micron Technology was up 10.45%. The Philadelphia Semiconductor index jumped 2.84%.

Tech stocks rose despite benchmark 10-year Treasury yields reaching the highest since May.

U.S. stocks had rebounded sharply on Friday after a string of losses in December and the first few sessions of January, when concerns about high valuations, rising Treasury yields and thin liquidity saw traders pull back after a strong 2024 run.

Automakers gained, with Ford rising 0.40% and General Motors adding 3.40% after a newspaper report said President-elect Donald Trump’s incoming administration is focused on imposing tariffs on every country, but only certain sectors deemed critical to national or economic security. Trump later refuted the report.

“He did come out and say that he’s not going to water down his tariff plan, but the seed has been planted that the Trump administration’s tariff policies won’t be quite as shocking as people originally feared,” said Brian Jacobsen, chief economist at Annex Wealth Management.

Automobile manufacturers are considered the most vulnerable to tariffs imposed on U.S. trade partners, given their vast supply chains.

Leading to Trump’s Jan. 20 inauguration, investors are seeking insights into his policies, which are broadly seen as beneficial for corporate America as well as the U.S. economy.

Citigroup moved 2.45% higher after a bullish rating from Barclays. An index tracking banks rose 0.22%. Fed Vice Chair for Supervision Michael Barr, who has sought a range of strict rules on the nation’s biggest banks, said he will resign.

In a week packed with economic data and speeches from U.S. Federal Reserve officials, investors will look for clues on the pace of monetary policy easing this year. Later in the week, the focus will be on a monthly payrolls report.

While Trump’s proposals could boost corporate profits and energize the economy, they also risk driving up inflation. Fed Governor Lisa Cook was the latest among a number of policymakers to caution that inflation risks remain in the new year.

Advancing issues outnumbered decliners by a 1.01-to-1 ratio on the NYSE and a 1.1-to-1 ratio on the Nasdaq.

The S&P 500 posted eight new 52-week highs and eight new lows, while the Nasdaq Composite recorded 97 new highs and 39 new lows.

Volume on U.S. exchanges was 17.36 billion shares, compared with the 12.37-billion average over the last 20 trading days.

Markets will be shut on Thursday for a national day of mourning to mark the death of former President Jimmy Carter.

(Reporting by Sruthi Shankar, Johann M Cherian and Pranav Kashyap and Sukriti Gupta in Bengaluru; Editing by Pooja Desai, Maju Samuel and Rod Nickel)

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