Boeing shares traded 0.1 per cent lower at US$152.06 (NZ$213.89) as of 1.28pm in New York. Earlier the stock had dropped as low as US$150.02 (NZ$211.02) after US President-elect Donald Trump called on the government to cancel an order to build new Air Force One jets.
"Boeing is building a brand new 747 Air Force One for future presidents, but costs are out of control, more than $4 billion. Cancel order!" Trump said on Twitter.
Asked by reporters, Trump did not say why he believes the planes will cost "more than US$4 billion (NZ$5.63b)," CNN reported.
"The statistics that have been cited [by Trump], shall we say, don't appear to reflect the nature of the financial arrangement between Boeing and the Department of Defense," said Obama White House spokesman Josh Earnest, according to CNN.
In Europe, the Stoxx 600 Index finished the day with a 1 per cent rally from the previous close, bolstered by bank and utility stocks. The UK's FTSE 100 Index increased 0.5 per cent, Germany's DAX Index rose 0.9 per cent, while France's CAC 40 Index gained 1.3 per cent.
Investors are awaiting the results of European Central Bank gathering on Thursday, with bets the central bank will extend its bond-buying program.
Meanwhile, Italy's banks might be offered a helping hand following Sunday's referendum that prompted Prime Minister Matteo Renzi to resign.
"Optimism about banks is driving markets in Europe firmly higher, on expectations that some sort of bail-in for Italian institutions is on the cards," Chris Beauchamp, a market analyst at IG in London, wrote in a note, according to Bloomberg. "This would provide a real boost to risk appetite."
Oil prices fell about 2 per cent, sliding for the first time since last week's OPEC agreement to reduce production.
"Reaction to the OPEC news was overdone," Phil Davis, managing partner at venture capital firm PSW Investments in Woodland Park, New Jersey, told Reuters. "All they did was agree to cut output that they had added recently."