The S&P 500 and the Nasdaq have opened little changed, with technology stocks under pressure as oil prices hit about two-week highs ahead of big bank earnings and inflation data due this week that could influence the Fed's monetary policy path.
Brent crude futures were trading at more than $US106 a barrel after deadly strikes on Riyadh's international airport over the weekend.
The rise was contained, however, after US President Donald Trump said Ukraine and Russia had agreed to halt attacks on each other's energy facilities following a US diesel-supply deal with the Kremlin.
Details of the agreement were not clear and the plan faces opposition in Washington DC.
The S&P 500 communication services sector rose 1.1 per cent on Monday, with Meta adding 3.2 per cent while energy stocks added 1.8 per cent.
The gains were countered by a 0.2 per cent decline in heavyweight tech stocks on the benchmark index.
Salesforce rose 3.5 per cent after a BofA Global Research double upgrade to "buy" from "underperform," lifting the Dow to a near three-week high.
In early trading on Monday, the Dow Jones Industrial Average rose 107.03 points, or 0.21 per cent, to 51,761.98, the S&P 500 gained 6.14 points, or 0.08 per cent, to 7,817.68, and the Nasdaq Composite lost 10.23 points, or 0.04 per cent, to 27,355.94.
Corporate results now have the market's attention, with S&P 500 earnings expected to soar 30.6 per cent in the third quarter, according to LSEG IBES data.
Major US banks including Goldman Sachs, Citigroup and JPMorgan Chase will kick off earnings on Tuesday.
"The big themes to watch in earnings season include how companies are deploying and profiting from AI," said Clark Bellin, president and chief investment officer of Bellwether Wealth.
"Whether they are able to maintain or raise pricing power, and how they are navigating the surge in borrowing costs - which is a dynamic that companies did not have to grapple with one year ago."
Treasury yields climbed to 24-year highs earlier this month as elevated energy prices stoked concerns inflation could remain sticky, potentially keeping policymakers hawkish.
The US Treasury market is closed for Columbus Day on Monday.
Recent data showing a lower-than-expected rise in inflation and weaker jobs growth has helped knock off bets of imminent hikes, resulting in greater scrutiny for upcoming US consumer and producer inflation data as well as retail sales figures due later in the week.
Markets are pricing in just a 19 per cent chance the US Federal Reserve will raise interest rates this month, according to CME's FedWatch tool.
Cleveland Fed president Beth Hammack's comments will also be parsed later in the day.
In shares, Chipotle Mexican Grill dipped 3.0 per cent after Starbucks said it was not buying the burrito chain.
Quantum computing firm IonQ's shares slipped 4.7 per cent after the company struck an all-stock deal to buy privately held cybersecurity firm Elisity in a transaction valued at up to $US1.3 billion ($A1.9 billion).
IREN's shares rose 2.0 per cent after The Information reported Anthropic had entered into a multi-year cloud deal with the data-centre firm.
Declining issues outnumbered advancers by a 1.25-to-1 ratio on the NYSE and by a 1.44-to-1 ratio on the Nasdaq.
The S&P 500 posted 9 new 52-week highs and 4 new lows while the Nasdaq Composite recorded 23 new highs and 123 new lows.