Oil ends at four-year low ahead of OPEC meeting

Crude-oil futures extended their slide Wednesday, ending at a four-year low on expectations the Organization of the Petroleum Exporting Countries won’t move to significantly cut oil production.

Sweet crude futures for delivery in January CLF5, -1.19%  declined 40 cents to close at $73.69 a barrel, continuing to plumb levels last seen by a most-active contract in September 2010. January Brent crude LCOF5, -1.56%   on London’s ICE Futures exchange slid 54 cents to $77.80 a barrel.