Crude oil futures tumbled Monday as traders returned to their desks after the Christmas break.

West Texas Intermediate crude for February delivery dropped $1.29, or 3.4%, to finish at $36.81 a barrel on the New York Mercantile Exchange.

With the loss, crude oil was within a few dollars of this month’s 6-year lows.

A global supply glut and demand concerns have driven oil sharply lower since summertime.

Prices are down about 40 percent in 2015.

The material has been provided by InstaForex Company – www.instaforex.com