
About 15 minutes into trading, the Dow Jones Industrial Average was down 0.3% at 38,479.72.
The broad-based S&P 500 dipped 0.1% to 5,427.77, while the tech-rich Nasdaq Composite Index was flat at 17,688.58.
Investors in New York are monitoring developments in France, where political uncertainty over upcoming snap elections weighed on equities last week and in the UK, where the Bank of England will hold a policy meeting this week.
Among individual companies, Boeing edged up 0.5% as markets look ahead to Tuesday’s hearing in the Senate Permanent Subcommittee on Investigations into the aviation giant’s safety problems.
Markets will be closed on Wednesday to mark the Juneteenth National Independence Day.