CNBC | Dow halves gains; Nasdaq struggles to hold higher CNBC U.S. stocks traded higher Thursday, trying to extend Wednesday's late-session recovery as oil bounced from multiyear lows. ( Tweet This ). Also supporting gains were morning comments from European Central Bank President Mario Draghi that raised hopes ... US stocks sharply higher as crude-oil prices spike Dow plunges more than 500 points as oil prices keep falling Wild day on Street: Dow halves 500-plus drop |