Oil advanced gains on OPEC agreement to cut production . .

   Oil halted gains below $50 a barrel as investors weighed falling U.S. stockpiles against speculation the recent price rally will encourage producers to raise output. Futures declined as much as 0.8% after advancing 2.3% Wednesday to the highest close in more than three months. U.S. crude stockpiles last week fell below 500 million barrels for the … More Oil advanced gains on OPEC agreement to cut production . .