Crude oil prices failed to sustain early gains Monday, stung by demand concerns and a stronger US dollar.

OPEC meets this week amid indications that the cartel’s production continues to rise.

OPEC supply has risen in November to 31.77 million barrels per day (bpd) from 31.64 million in October, according to reports.

January crude oil settled at $41.65/bbl, down 6 cents, or 0.1%, on Nymex. Prices were down 10.6% in November.

Meanwhile, the National Association of Realtors released a report on Monday showing a slight uptick in pending sales in the month of October.

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