Wall Street recovered from sharp falls in morning trading but still closed slightly lower, as oil prices fell sharply.
The main Dow Jones index closed down 26.09 points, or 0.2%, at 17,526.08. The wider S&P 500 was flat while the tech-heavy Nasdaq was 0.2% lower.
Both Brent and US light crude oil fell about $1.30, or 3.5%, a barrel.
On the upside, entertainment giant Disney was up 1.3% thanks to the success of the latest Star Wars film.
On Sunday, The Force Awakens became the fastest film in history to take $1bn (£674m) at the global box office.
Sportswear giant Nike also gained ground, rising 1%.
On the downside, energy stocks fell due to the slide in the oil price, with Chevron down 1.8% and Exxon Mobil 0.7% lower.
Outside the main index, Conoco Phillips fell 2.9%, while Marathon Petroleum dipped 2%.
"The 3% dive in crude oil this morning shows you that the sellers are still in control of the energy market and that`s leading jitters on Wall Street, coupled with just normal digestive action after last week`s strong gains," said Adam Sarhan at Sarhan Capital in New York.
Brent crude currently stands at $36.57 a barrel, while US light crude is trading at $36.70.
In the run-up to Christmas, Brent sank to $36.04, its lowest level since July 2004.
In the summer of 2014, Brent stood at almost $115, but the price has fallen dramatically due to oversupply and reduced demand.
- Prada seeks younger customers in bid for growth
- Lotte vice chairman Lee In-won found dead
- German business confidence falls post-Brexit, says Ifo
- Tesla touts speed and driving range with new upgraded battery
- Stocks creep up amid Fed limbo, dollar dips leftright 22leftright 12leftright
- China Crinkles Aluminum Foil Makers
- Cisco to lay off about 14,000 employees: tech news site CRN leftright 22leftright
- UK to avoid recession and world economy to ‘stabilise’ as Brexit shock passes - but US poses biggest risk to global growth
- Fuel prices push up UK inflation rate to 0.6%
- Humidity 47%
- Winds 0 kph